Sometimes this is a bug from (Metamask).
I have something similar case for balance showing zero or wrongly showing the balance, maybe you can restart your metamask or try to re-intall the wallet. Don't forget to backup all of your wallet.
As long your fund in your address while you are checking on the explorer (everythings is fine) this is potential wallet buggy.
Yes, i can attest to this on which sometimes i do really experience on having that 0 token balance on my MM even if it does have that balance on watching it on explorer.
@OP, have you able to import that TA of Moongirl? 0xF7B4FeB2D25975FFf347aD6Ccf5bE5BA16EE35A8 on Metamask?
Just like been said that you should really be on the right Blockchain on MM for you to be able to see that balance specially on Metamask.
Reinstalling or relaunching your browser and re-access that wallet extension would do its job most of the time.