Unable to login
I'm using Pop!OS 20.04. I had installed Evolution from the Pop Store and selected the version from Flathub which seems to have EteSync integration built-in. I added a Collection account via Edit>Accounts and that process works fine. But, after some time, it asks for my password again. I enter it and it asks again. I removed the Flatpak version and installed the deb version which doesn't have EteSync support and installed the separate deb for EteSync integration. Below are the steps I followed to install the module:
cd Downloads/
echo 'deb http://download.opensuse.org/repositories/home:/fawz:/libetebase/xUbuntu_20.04/ /' | sudo tee /etc/apt/sources.list.d/home:fawz:libetebase.list
curl -fsSL https://download.opensuse.org/repositories/home:fawz:libetebase/xUbuntu_20.04Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/home_fawz_libetebase.gpg > /dev/null
sudo apt update
sudo apt install evolution-etesync