OKAYYYYYYYYYYYYYYYYYYYYYYYY FINALLY IT'S OKAY !!! Go to the Microsoft store, clik on the three points on the up right corner, choose download update, on the page click get updates, then Microsoft store will update and it will work again!!
Yes, FINALLY, just did an update of microsoft store, did the switch to windows 10 home under settings>activation, went to Store and got the switch out of S mode. HOORAY
and first thing I did was download Chrome......
Good luck everyone.