https://www.pcgamer.com/apex-legends-11-update-is-live-but-may-be-resetting-player-accounts/

A new Apex Legends update went live today—about 45 minutes ago as I write this, in case you're curious—bringing with it some changes, some fixes, some secret anti-cheat improvements, and, finally, the ability the reconnect with the rando squad from your last match. Unfortunately, with the good news comes the bad: There is apparently an issue that's resetting the progress of some accounts, and Respawn recommends that players do not buy or craft anything until it's cleared up. 

As for the actual patch notes, I think the new "Last Squad" option is the big one for me. More than once I've finished a pickup match with friendly, easy-going, skilled players, and thought to myself, "I'd really like to play with them again—if only I could remember their names."