Root cause identified and fixed!
Problem:
- WooCommerce stores enabled in TWO places:
1. $method->enabled property (what admin displays)
2. $method->instance_settings["enabled"] (what we were updating)
- We were only updating instance_settings, not the property
- So toggle saved to DB but $method->enabled stayed "yes"
Solution:
✅ Read from $method->enabled (correct source)
✅ Update BOTH $method->enabled AND instance_settings["enabled"]
✅ Save instance_settings to database
✅ Now both sources stay in sync
Evidence from logs:
- Before: $method->enabled = "yes", instance_settings = "no" (mismatch!)
- Toggle was reading "no", trying to set "no" → no change
- update_option returned false (no change detected)
After this fix:
✅ Toggle reads correct current state
✅ Updates both property and settings
✅ Saves to database correctly
✅ WooCommerce admin and SPA stay in sync
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