Sometimes snap store needs an update. Sometimes Snap store is open so it cant be updated!
Updating the store is only possible when the store is closed, so how do you update it if you need the store open to run the update?
There are several ways, one of them is to wait and eventually the magic should happen.
Another is to manually update it yourself. This is far easier than you think and also the best and quickest way to get your store updated.
Open up your favourite Terminal app and issue these commands.
The Snap store is now forcibly closed. Now issue the command
You will see in your Terminal app any updates outstanding being installed. Once done, open up the Snap Store and go to the Updates tab at the top. All should be now clear.