Animated themees dont worked

hi everyone,
i am having trouble make themes on thunderbird anmated since it on 68.x only on thunderbird
is there beta for it?

Hi Andrew,

Have you read the Release Notes for version 68?

Theme support: Only WebExtension themes are supported now. Both and now provide WebExtension themes.

They probably won’t work in that or any future version.

ah didnt read that it was new install… i wasnt aware