Test ads not working, showing no fill

[Yoni Goldshtein]

The issue is going on for the past couple days, it happens in old apps which are working fine in production but im getting no fill on test ads. no issues in the account. if i create a new app its working. I see the issue is going on to a lot of developers here but no clear solution for this. Seems to be a global issue on google mobile ads sdk or admob. Please advise

[哈哈不想哈哈]

I have the same problem, if solved, please tell me the solution, thank you