Why no Playback

I have 4 Wyze cams. I have lost the Playback option at times on all 4 of the cameras but they eventually are made available again. However, on one of my cams, the Playback feature is not available, and hasn’t been available for about a week now. Any suggestions??

Also, when I do have Playback, it’s very scratchy on all 4 cameras. Why??

Thanks.

app version
firmware version

What model router do you have?

Are you referring to Playback from the SD card?

Also, what types of cams are you having problems with (v2, pan cam, outdoor cam)?