cant log in after 22th july maintenance

the problem may persist for the next two days because of providers, but it will go away
for now you can try the following:

Spoiler

1) start - control panel - network and sharing center - change adapter settings - find your connection and its properties
2) choose internet protocol tc/ipv4 and press properties
3) choose use the following dns server addresses and put 8.8.8.8 in the preferred dns server line
4) run command prompt
5) put in it ipconfig /flushdns
6) delete frost folder and restart the game