Hello there
I just tested this using the latest versions
Forminator 1.14.10.1
Divi 4.9.4
and no other plugin, and v3 recaptcha seem to work well:
View post on imgur.com
Could you please update to the latest versions of both Forminator and Divi and give this another try?
In case you are already there, can you proceed with a conflict test?
How to:
First, create a recent backup in case you lose any settings during the test and have to restore to a previous working state.
Then deactivate all plugins apart from Forminator, clear all caches, and check again if the issue is still there. If not, it means that something is conflicting, so start activating the remaining plugins and theme, one by one this time, checking every time for the reported issue, until you reproduce the issue, thus finding the conflicted combination. The following flowchart image can assist you during this test: https://premium.wpmudev.org/wp-content/uploads/2015/09/Support-Process-Support-Process.gif
If this is a live website with traffic, I’d rather advise to create a staging environment, meaning a complete and exact copy of this installation into another location/folder in the same server, using a separate database, and perform the test in there instead without worrying about the live site.
Looking forward to your results,
Dimitris