I am new to the Nintendo Switch version of bedrock so I'm not completely sure of what it should be like but there are a few issues I am having with it

1. It crashes constantly when I try to open up a world. I have to try three or four times to get it to load up the world without crashing. I don't seem to have this issue when I am signed into my Microsoft account, but when I'm not signed into it, it crashes. I know there was supposed to be an update to fix this, but the game is still crashing. 
2. I have to sign in to my Microsoft account every time I start up the game. It never stays signed in to my Microsoft account. When I try to sign in it says 'We tried to sign you in to your Microsoft Account, but something went wrong.' And I have to grab my iPad to sign back in again. If I have to close the game for some reason, next time I open it... I have to sign back in. So if there was a way to fix this, it would be greatly appreciated if it was fixed. 
3. The purchases I have made on my Xbox Live account for the Xbox One and iOS versions of Minecraft have not synced with the Nintendo Switch when I sign in on there. I don't know if it's supposed to, but when I open up the Marketplace it says '(Username)'s Packs' using my Xbox Live username instead of my Switch username but nothing comes up.