Stickers don't appear

[acexiis]

When matrix.org isn't on the domain whitelist, it's impossible to load stickers. Anybody have an solution for that ?

Thanks

[acexiis]

Just for update: Stickers don't appear whether you don't authorize the federation with. matrix.org

[reivilibre]

Are these the default stickers that are built-in to Element? Probably they are already uploaded on a server somewhere and that one needs to be allowed in the federation.

This might be better off as a question for the Element team though. Synapse doesn't directly get involved in stickers.
However I think the current stickers in Element are a bit primitive and there are people who want to replace them.

If you are very keen on stickers anyway, with a bit of effort and https://github.com/maunium/stickerpicker you can create your own sticker packs and replace the built-in sticker picker and use sticker files that are hosted on a server that is in your federation.

[anoadragon453]

As with any media on a homeserver that you've blocked federation with, that media will be blocked as your homeserver is unable to download it.

As @reivilibre said, your options are to either add matrix.org to your domain whitelist, or to re-upload the stickers to your own homeserver, or one you can federate with.