Huawei Mate 20 Pro - FB Messenger stops working after some time on lock screen

[Android Central Question]

I recently bought Huawei Mate 20 Pro and i found out that after some time on locked screen i stop receiving notifications when someone write me on FB messenger. Can someone give me some info about this weird thing?

 

[Rukbat]

Email Facebook for any problems with their apps. android-support@fb.com

 

[VLaDi-G]

Email Facebook for any problems with their apps. android-support@fb.com

After a couple of tests i now i think that the problem is related to my internet connection. I`m on mobile data (my wifi is off) . Today i wake up and when i unlock my phone i receive a couple of notifications for different apps