Hi Nick, thanks for your reply.
Sorry I didn’t write it in previous post. Yes, I tried first by desactivating all plugins first and still wasn’t working so I guess there’s no plugin conflic there.
The site is running again, don’t what happened today with database connection but is working fine now.
https://inspiremotivateandengage.com/web-form-young-person
I haven’t tried with a different theme as I’m afraid that this will make me lose all customization work done on it.
I don’t know if this would work but the form has been working fine for a few weeks with this theme.
If you think is a hosting problem I’ll talk to the 1&1 support guys.
Thanks again for your help