It means you cannot use mail/contacts/calendar or anything else via Microsoft on any SFOS device until an updated version is released.
However, as a workaround, you may be successful with syncing contacts via one of the other possibilities like Nextcloud, or Memotoo (<== I happen to like them, they support syncing everything to anything).
Sync the MS stuff into an account there, and to the device from that.
(Side note: that’s what you get by putting your trust in and relying on a company like Microsoft. But I guess the ship has sailed.)