Hey there @goala2016
I can see a couple of JS errors in the console log that might be affecting the form loading as well. https://i.imgur.com/FIfdekW.png
Could you please proceed with a conflict test around this?
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, activate a default theme like TwentyTwentyOne, 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. Reference: https://premium.wpmudev.org/docs/getting-started/getting-support/#chapter-2
Warm regards,
Dimitris