Add reminder to update wherever connection error happens

[man-shar]

@travishartman faced this recently – where he had updated his token everywhere but bluprint's token was something he was unaware of.

Since bluprint start is the first thing users might do after a token reset, he suggested it was worth adding some instructions to the connection error message.

Implements the same.

[hobbes7878]

Closing this for now. I think this error would need to be specifically caught by its status code, not just presumed to be the most likely error.