Fortnite challenge bug?

Hello so who I do in Fortnite mission they are not displayed and I get nothing, for example. Get Shield through shield potions 0/100 who I then but two drink happens Can someone help me why that could be.

This may be due to your internet. Try switching it on and off.

No nothing just tested and it did not work PC disconnected from the Wi-Fi 10 sec and tested nothing

Then wait until tomorrow, the servers are probably having problems

OK thanks.