hello, thank you for your answer!
I solved the problem by rewriting the table and importing the data again. Minor problems remain though (I use the free version): often if I edit two options at a time, when I save the changes a blank page comes up and I have to go back and re-flag the options.
Anyhow, now it works (it was useless? to give you the link to the previous table, because anyway it wasn’t displayed on the page, you couldn’t even see the code): https://angelobonaguro.eu/database-riviste/
