[SOLVED] Plugin update

Darkmagister

Hello, i've update betheme to latest version 21.9.5, but i still have 3 plugin that are not able to update:

Layer slider if i press the update button says already to latest version

slider revolution says unable to find update package

and wpbaker it says invalid license key

how can i update those ? did i have to remove it and reinstalling it ? i'am a bit afraid to remove it because i'm not sure that it would be able to download it again.

thanks

EDIT:

i've made a backup, removed one plugin and reinstalled, and now it works....