Every Meta, Google, TikTok, Klaviyo and Shopify change we've marked Action required: something in your account changes, or stops working, unless you do something. Open deadlines come first, soonest first, then ones with no fixed date. Heads up and FYI changes are in the main feed. Updated Nov 2, 2026.
What to do: Make sure reporting tools, bulk uploaders and agency scripts have moved to v25.0 or v26.0, and check error logs after Nov 10.
Source: Meta Marketing API changelog ↗
What to do: Before Nov 12, decide on purpose: check the toggle in Events Manager > Data sources > your Pixel > Settings and turn it off if you don't want it. Either way, save a baseline now (daily Meta-attributed purchases vs. Shopify paid orders for the last 30 days), keep CAPI running, and annotate Nov 12 in your reports so a jump in Meta ROAS isn't read as a performance win.
Source: Meta Business Help Center: About measuring conversions on customer devices ↗
What to do: If you turned Dynamic images off because of stock photos, licensed or UGC imagery, or regulated claims, the account switch will no longer protect new PMax campaigns. From Dec 4, set image extraction to Off on each new Performance Max campaign you create. If you use a script or tool to build campaigns, have it send GENERATE_IMAGE_EXTRACTION = OPTED_OUT. When you update an existing campaign through the API, resend the whole asset_automation_settings list, because a partial update wipes the other settings (for example text automation). Check that your landing-page images are licensed for ads.
What to do: Ask every app that adds code to your storefront whether it uses script tags, and get migration dates. Test tracking pixels on a duplicate theme well before March.
Source: Shopify developer changelog ↗
What to do: Don't wait for the terms: Advantage+ enhancements can already change live ads, whatever happens to the new wording. Before Black Friday creative goes live, open each active ad's Advantage+ creative enhancements and turn off the ones you don't want (check the collapsed sections too). Re-check after any account update notice. Spot-check what actually served using ad previews. If you are an agency, agree in writing with clients who approves AI-made changes, and watch for a new effective date once Meta's consultation ends.
Source: Meta Self-Serve Ad Terms preview (effective Nov 20, 2026) ↗
What to do: Ask the vendors behind custom Klaviyo integrations which revision they pin, and get anything on 2024 revisions upgraded.
Source: Klaviyo API changelog ↗
What to do: If an app or script creates Klaviyo campaigns through the API, have its owner test against 2026-10-15 before upgrading the revision header.
Source: Klaviyo API changelog ↗
What to do: If any Search or Performance Max campaign uses location assets, check what offers your landing pages show: expired sales, member-only or newsletter codes, old prices. Either add your own promotion asset (campaigns with a manual promotion are skipped) or turn it off: Assets > More > Account level automated assets > More > Advanced settings > Automated promotions: Off. To see what Google added, filter Assets by Promotion and look for "Google AI" in the Added by column. Repeat in every account you manage.
What to do: List the Sales and Leads ad sets that depend on manual exclusions such as Audience Network or right column, and save their placement breakdowns now. Then set account-level exclusions by objective (Advertising settings > Account controls) for placements you can never run on, and use placement value rules to down-weight weak placements. Remember that account-level exclusions apply to every campaign in the account. Jon Loomer's Oct 27 read of Meta's guidance: to all but switch off Audience Network, add a placement value rule that lowers its bid by 50% to 90%.
Source: Meta Business Help Center ↗
What to do: List budget-limited Target CPA and Target ROAS campaigns and compare actual CPA or ROAS with the target for the weeks before Aug 17. Set each target to what you'd actually accept. Google says matching recent averages keeps current performance. Or switch to Maximize conversions or Maximize conversion value. Compare lost impression share (budget) with lost impression share (rank) before and after Aug 17 before blaming the drop on this. Give each change 1 to 2 conversion cycles.
Source: Google Ads Help: Changes to target-based bid strategies ↗
What to do: Decide before Oct 28 whether you want this on. If not, opt out, or switch it off per ad, and watch site sessions vs. Meta-reported conversions after the switch.
What to do: If your store or an app syncs native Facebook or Instagram Shop orders, confirm what breaks on Oct 27 and move buyers to website checkout.
What to do: Remove "story" from messenger_positions in any manual-placement ad sets, templates and bulk or agency scripts. Advantage+ Placements need no action. After Oct 27, compare delivery by placement with the week before.
What to do: Find any live poll ads and plan replacement creative. Ask tool vendors to strip poll fields from creative specs before Oct 27.
What to do: Check international landed prices and conversion since Aug 24. Duties now show at checkout, which can change cart abandonment.
Source: Shopify Changelog ↗