All settings lost after update and export/import settings not working

Hi,
I updated from 1.0.2.4 to 1.0.3.7

Now all forms setting are vanished, so i lost all my settings on all my forms!
On top of that export/import settings is not working, so I can’t import from v 1.0.2.4 json settings file that I had fortunately saved. I had to go back to version 1.0.2.4 and import a my settings from there.

So now I’m stuck with v. 1.0.2.4 and I can’t update!

I’m using this plugins from years now, and this is not the first time I loose all my settings after an update.
I know you work in your spare time, and I appreciate it, but and I’m afraid to say It looks like this plugin gets new bugs on each update, making it a difficult choice for those who manage websites with professional needs.

Any help please?
Let me know if you need me to send you a copy of my Json file for debugging.

Thankyou