It there maybe another problem with high numbers?
I started with 21000 and i thought it works. But now i got the 21002 two times…
It worked after deleting the cf7_submission_id_COUNTER and making a new Counter in the form with the new Version 2.2.0.
Thanks a lot!
me again: I didn’t fixed it. Now it does not increase the Counter at all. It stays as 20000.
I “fixed” it now within the database and changed cf7_submission_id_COUNTER in postmeta to 20000. But you might wanna look at this.