I'm not sure if this is related, but I had a similar problem the other day with ReadPaperback in using my token to allow access to my Pinboard account.
The dev responded really quickly:
> "I’m not sure why but it looks like pasting a token on both Safari and Focus change part of the token to be lowercase and I wasn’t properly handling the different case."
The dev responded really quickly:
> "I’m not sure why but it looks like pasting a token on both Safari and Focus change part of the token to be lowercase and I wasn’t properly handling the different case."
Not sure if this the problem here too?