Hi @MikaelB,
Thank you for report and investigating both tissues.
One of the original problems with tt-rss is a bug in debconf and we have a workaround in upcoming release and patch for the Debian package. However, the problem “Password authentication failed” may need somemore work. I am glad you were able workaround it meanwhile. Can you describe the exact circumstances under which you ran into the issue?
The problem with matrix-synapse seems like a regression with the recent improvements we made for Let’s Encrypt handling. It is unlikely that the same domain on Raspberry Pi caused the problem. I will investigate this and try to fix in the upcoming release. It seems most likely caused due to domain name configuration problem. If you face further issues with it please try configuring a domain first, then ensure that Let’s Encrypt certificate is obtained for the domain before installing Let’s Encrypt. Was your domain name configured when you installed matrix-snapse? What failure did you get with matrix-synapse before your reinstalled?
BTW, to uninstall matrix-synapse completely and reinstall with FreedomBox try this:
sudo su -
apt install sqlite3
echo "delete from plinth_module where name='matrixsynapse';" | sqlite3 /var/lib/plinth/plinth.sqlite3
apt purge matrix-syanpse
After that install normally from FreedomBox interface.