A question

Does anyone know why the timer goes up evey time I make a move.

Shouldn't the total time decrease gradually with every move depending on how long the player is thinking before the move?

The available time increases from time to time and I have no idea why. Can anyone please help?

Many thanks in advance!

Increment probably

Can you please explain what you mean by that? Did I select a wrong mode?

I check your game. You are probably playing 15|10 rapid which means 15 min with 10 sec increment. If you are annoyed with increment, change it to different time control.Hope that helps

First number in a time control is how many minutes you start with. Second is how many seconds are added per move.