upgrade to version 1.24.1 fails

"Failed to download package. Download it and install manually from  www.joomdonation.com/index.php?option=co...ckage&document_id=82 ."

I get the above error message when Joomla try to update and when I try as directed i get an error 403 - Invalid domain.

Please assist.
TIA
BR
/arne

Hi,
To update extension from Backend side, you should follow below steps:
1. Register a Download ID from: www.joomdonation.com/download-ids.html and enter it in Configuration page
2. Publish the Joomla Installer plugin: Edocman Update package.
After that, you will able to update extension from Backend side.
Thanks
Dam