Ok, great, now your https accesses to the new authorize.net servers with new certificates work! And double-transactions are detected correctly (well, displayed twice, but that's minor).
The "1048 column 'subid' cannot be null" (that appeared on your site 5 months ago here:
www.joomlapolis.com/forum/153-professional-member-support/239919-error-message-after-payment-1048-column-subid-cannot-be-null
) is a different issue. Not even sure that it is inside CBSubs, as that looks like a MySql query error, and no CBSubs tables have a "subid" column.
Could you please do 2 things:
1. Check database structure in: Community Builder Tools: Check all 3:
- Check Community Builder Database
- Check Community Builder User Fields Database
- Check Community Builder Plugin Database
And repair if any structure is not up-to-date.
2. Turn Site Debug to ON in Joomla Configuration and try re-triggering the error, that should give more information.
There is a second thing that makes me think that the error is outside CBSubs: There is no Error log for this error in your "History" error-log of CBSubs.
Maybe you have some other plugins or auto-actions with a column "subid" in a database ?