I read the previous posts about my problem, I tried the suggestions, but no luck. My forms suddenly stopped working. I can't add new fields to a new form or created form. I can edit the forms, tho.
Here's what I did:
1. Added more memory to wordpress. No luck
2. Deactivate the Theme, no luck
3. Deactivate all pluging but gravity forms, no luck.
Any help will be appreciated.