Updating Soco fixes it: after changes on TikTok's side, videos in Soco don't play and TikTok links you share to Soco don't open on any version before 1.37.0. Soco can't fix this on your phone without the update.
Update Soco
Update Soco in the App Store, then open Soco and try the video or link again.
Still not working after the update?
Message us in the app chat and tell us which video or link won't open. A screen recording helps us see what you see.
Next steps
Your next question is probably one of these: