Recurring problem: There is no carrier that delivers to the address you selected

[Eutanasio]

Hi,

I use Prestashop 1.7 with Advanced Stock Management. From time to time, suddenly don't know why, transporters become unselected in the Stock -> Warehouses -> Each Warehouse tabs; so when a customer tries to place an order un the website, it sais "There is no carrier that delivers to the address you selected".

Every time this happens, I have to go to the BO and select again all carriers for each warehouse so it works again in the FO for all customers to place their orders. But then, few days after it happens again. At the beginning it starts happening every few days and then becomes more frequent, even couple times a day!

What can be causing this problem? every time I fix it, I clean cache just in case. I don't know if it's caused by an automated module upgrade or something.

Thanks for the help!