In the end I did just that, I installed a local lamp and recreated all the possible tables via script.
The imported ones were not recoverable, in many tables were missing the auto increment and primary fields, and the auto increment fields were filled with empty fields, missing numbers and zeros, etc etc etc., really a mess...
Recreating the tables locally and importing mine, everything seems much more correct.
Today it has also arrived the first report by mail of the cronjob of xxxhashtag.com.
But something maybe still does not work... The cronjob took 8800 seconds...
usually this cronjob takes 2...
Now I have to figure out if there's still something wrong or if he's just dealt with a heavy sync with other sites.
Unfortunately the backups I had were not up to date and Xxxhashtag works with many sites and many databases.
Usually it checks the data of the last 24 hours, but having restored the databases, probably many data have been added in the last 24 hours...
We will see in the next few days...