Game Time went up instead of down

ok so i was playing some dude in blitz in a game of 10mins.. i had 6 mins left and he had 20 sec left.. i had only a king.. while he had two pawns rushing to become a queen..

at 2 secs left.. i clearly thought i would have won before he can even get a queen.. but he doesn't lose.. instead from 2 seconds... he goes back to 8 seconds.. then he gets another queen and his time is raising and becomes like 18 seconds.. thats BS man..

can someody like fix that..

time increment. every time u move, u get some time back.

No need to fix it.  Working as intended.

Either that, or it's the time compensation for the difference in the quality of the respective connections.