Hi, I've been having the same issue since Thursday. Samsung S10 here. I hope this can be resolved.

Hello!
Thanks for your posts! This issue is related to a bug we were previously experiencing and recently resolved. If you are still seeing this please delete/reinstall the Strava app. Our recommended instructions are below:
 
1. Delete the Strava application from your phone
2. Power your device off for 10 seconds
3. Turn your phone back on
4. Reinstall the Strava application 
 
Note: You will not lose any data if you do this since all data is stored on the Strava servers.

This should resolve this issue. If you have issues after doing the above, please submit a support ticket.

Good day.

Thank you for the feedback. 

I've followed these steps and still not getting any notifications or what so ever.

Currently experiencing the same problems,I haven't been receiving any kudos or strava notifications since Saturday.

 I have followed the above suggestion to resolve the issue but still no joy.

Please can you update if this has been resolved.

👋Hey All!

Good day.

Thank you for the feedback,  it's highly appreciated.

As of today notification started working again. I didn't do anything special apart from what was suggested on this thread. Thanks, if somebody fixed something! 🙂

👋 Hi All!
I'm happy to report that this issue has been resolved and notifications should be working as expected. If you are still having issues, we ask that you submit a support ticket, and someone from our Support team will be happy to work with you to troubleshoot. Apologies for the inconvenience and thank you all for your patience!