takes a while to log me into my account and some times I get and error message

My friends and I have a realm that we all play on and it seems that I'm the only one experiencing issues with it. Some times I play on my switch and some times on my PC, but both have been experiencing issues. On the switch it takes a while to log me into my account and some times I get and error message and that I need to restart the game, but no matter how many times I restart it I still get an error message