XMPP authentication failure

Hi all,
I am very excited about Node-Red. I am busy to automate my house.
However, I have a problem with my Nefit Easy thermostat.
I have installed the "node-red-contrib-nefit-easy" node.
I get an authentication error while I'm sure I use the right credentials.
Who is familiar with this? Who can help me?
Error message : "Nefit initialization : XMPP authentication failure"

Tnx,
Rob

Looking at the repository - https://github.com/pepijng/node-red-contrib-nefit-easy it doesn't look like the author has touched it in a while - but he does seem to still be (occasionally) active on Github - so you may be best raising an issue there if you can provide as much debug info as possible.

Thank for your reply. I will try to contact him.