What does lichess.org/account/oauth/token look like?
Is it "full" of tokens? Asking since only related change I am aware of is github.com/lichess-org/lila/issues/14946 , so maybe one app you have used is generating tons of tokens and the old token was rotated/revoked despite the dgt play page indicating otherwise? Not sure, but if gives you something to experiment with if you want to. And you can post any relevant findings to github in your issue.
If you see a " DGT board automatic token " there, you could try to revoke it and generate a new one. ( and if you don't see one, that would also be interesting, since the Configure page said "You have an OAuth token suitable for DGT play."
Is it "full" of tokens? Asking since only related change I am aware of is github.com/lichess-org/lila/issues/14946 , so maybe one app you have used is generating tons of tokens and the old token was rotated/revoked despite the dgt play page indicating otherwise? Not sure, but if gives you something to experiment with if you want to. And you can post any relevant findings to github in your issue.
If you see a " DGT board automatic token " there, you could try to revoke it and generate a new one. ( and if you don't see one, that would also be interesting, since the Configure page said "You have an OAuth token suitable for DGT play."