Please visit our bug report site to see if the problem has already been reported: msft.it/6018bzTLq. You can upvote if the issue hasn't been resolved. If you think you've found a new bug, visit our help site here on how to submit a report! msft.it/6019bzTLS ^TK
Have you tried any basic troubleshooting steps to see if it makes the freezing stop? I'm not currently having any issues on my Switch is why I ask. ^TK
Sounds like you may have a corrupt file at play if it's not letting you play offline! Let's start by uninstalling, checking your firewall/antivirus for exceptions, and then reinstalling. Let me know if that doesn't work! ^TK
Let's try a couple of different things! First, are you playing on WiFi or Hardwire? Also, check your firewall/antivirus to see if it has given exceptions, and then try re-downloading. ^TK