I already opened a ticket with Riot Support, but this issue is really strange. In that ticket I’ve been passed to six different people and none of them have been able to fix it. I’ve tried a lot of things: updating all my drivers, reinstalling Vanguard, Valorant, and the Riot Client twice, and it’s still the same issue.
It seems like the game works right after you install it and launch it once, but as soon as you close it, it breaks and won’t let you connect anymore. I’m still waiting for updates on my ticket, but maybe someone here on Discord can help.