CRITICAL FIX: Bypass cached instance_settings completely.
Root Cause Found:
- $method->instance_settings["enabled"] = "no" (stale/wrong)
- $method->enabled = "yes" (correct, from somewhere else)
- DB option actually has enabled="yes"
- instance_settings is a CACHED copy that is stale
Solution:
✅ Read: get_option($option_key) directly (bypass cache)
✅ Write: update_option($option_key) directly
✅ Don't use instance_settings at all
Why instance_settings was wrong:
- init_instance_settings() loads from cache
- Cache is stale/not synced with DB
- WooCommerce admin uses different code path
- That code path reads fresh from DB
Now we:
1. Read current value from DB: get_option()
2. Modify the array
3. Save back to DB: update_option()
4. Clear caches
5. Done!
Test: This should finally work!
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