assuming your subscriptions are set up correctly and the e-mails are not getting directed to spam, then you might want to reach out directly to help@inatuarlist.org to try to get staff assistance with this problem.
this sounds similar to:
- https://forum.inaturalist.org/t/email-notifications-stopped/7460
- https://forum.inaturalist.org/t/not-receiving-notifications-selected/19057
welcome to the forum.