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i cleared cache on both and it works now ! thank you lots

Okay then that’s an issue. Must be some kinda glitch.. refresh the app. Clear its cache. If none of that works, just hop on your laptop and see if it’s the same issue there

5,000 videos is the limit of videos you can add to a playlist. Afterwards it will not work
To be honest 5,000 seems to low. They should make it 10,000 in my opinion. Don’t know why there’s a limit

ive had this issue for a few weeks now and it started very abruptly, like in the middle of a little Rabbit Hole session.

one (or maybe more, i havent checked) of my playlists will no longer let me add videos to it. i can "add" it, meaning clicking the check and coming back and seeing it still checked, but when i go to the playlist its not there. ive tried to add a lot of videos but it simply doesnt work. i thought maybe it was the playlist is too long now, but i have longer ones. 

my watch later still works and thats the only thing ive added to other than the playlist in question. 

on the playlist page it says "updated today" but only leaves off from a few days ago. 

any help would be appreciated, i havent found anything out there.

playlist not working