S2 not sending emails to registered users, (only public users)

I’ve found the cause of the issue:

In Registered Users tab of Subscribe2’s Settings, I’ve selected all Compulsory Categories‘s checkboxes but after I check DB usermeta table, I found that they don’t be checked by default for Registered Subscribers.

But after I click on “Update Preferences” in Registered > Registered Subscribers > user Edit page manually , below records will be added on the usermeta table and registered user will receive subscription emails.
“s2_subscribed” and “s2_catxx“

So if Compulsory Categories option was checked, usermeta table should be updated for all current Registered Users.
(also after new user will be register on wp, this table should be updated.)

https://www.ads-software.com/extend/plugins/subscribe2/