We're still researching this issue and all possible reasons for this. The DKIM record was corrected on May 12. If you haven't been getting any email, can you let us know:
1. Did anything change for this pre-and post May 12?
2. Have you checked your spam folder since that time?
3. Have you confirmed that your notifications under your profile are not turned off? See screenshot below.
4. Are you based in the U.S.?
5. What email client are you using?
6. Have you seen this issue with multiple community emails?
Thanks for any input in helping us troubleshoot, and our continued apologies for these issues!