Me and my friends want to play a comp game but it says the queue is disabled. Is this because of the planned maintenance or is it something else?

I've been playing Valorant on my free time for around 1 month already. Ever since I started using machine guns, I ranked up pretty fast from Iron to Silver. But each time I try to use the Vandal or the Phantom, the usual scenario would be a...

On Omen, for example, I have smoke bound to 4. If I play Jett, that makes her dash ability bound to 4 as well, which makes it awkward to use in a firefight. Any way to save different "agent profiles" or do I just need to manually change my...