Well, actually there is one more option. Go back to Lagom 2.2.8!
Make a backup (just in case);
Restore only files from WHMCS 8.11. If you restore the database from 2.2.8, the structure and actions of the system, such as invoices, tickets, etc., will be broken. That's why I restored only WHMCS 8.11 files from Lagom 2.2.8. It worked for me. But some bugs appeared, because the database is not the same anymore )).
But if you have the desire and time, then of course you can fix everything.
For now I'm staying on ClientX (while there is time).
Of course, these are crutches, but as an option to see Lagom2 on your site, which is what we are all waiting for.
@Mad Max hasn't been in touch for a long time... Perhaps they simply refused to implement the Lagom 2.3.2 project for us. Or they simply do not have the opportunity to do this...