I use emclient version 7.1.33 and Infomaniak email. I can connect from my Android device and with the use of DavDroid and CALDAV-sync, everything works both ways ie from the Infonamiak web mail to the Android device and vice versa. When I try configuring the desktop emclient to fetch calendar and contacts, the credentials are accepted but nothing flows into the client.
Maybe someone using Infomaniak will comment, but from my experience when adding a CalDAV or CardDAV account, if the credentials are correct but the url is incorrect, then it will login but not sync.
Their knowledge-base does have some instructions, but you need to login to the Workspace so I could not see what they recommend.
Thank you Gary but I figured it out eventually. Infomaniak provided an incorrect URL. After critically looking through its parameters, I deleted everything after my account name and voila, it worked!
Yes, if the url is not correct, it won’t sync anything even if it accepts your username and password.