Hello everyone! this is my first post and I apologize in advance if I'm not doing it right.
Well, I have installed the latest Calibre update and since then it doesn't send me the documents to my device. I have verified that the sending email was allowed, also the most "obvious" options, but it still doesn't send the documents and when I try to send an email, I get the following:
reply: b'535 Authentication credentials invalid\r\n'
reply: retcode (535); Msg: b'Authentication credentials invalid'
Could someone tell me how to fix it?
