Resolved!
I simply deleted the entries with an ID = 0, changed the ID field to PRIMARY and AUTO_INCREMENT and everything re-runs.
After checking out, I noticed that in the table “cf_form_entries”, the ID was at 0. I replaced it by 8 and I returned an email via the form. I received the mail and an entry was created with ID 0. Also, no new entries in the “cf_form_entry_values” table.
A new track?
