Not being able to lock in champ select

Okay so i've reccently been getting this bug it doesn't happen often but it happens randomly, i get to the lock in screen the timer is ticking and i go to lock in the champ that i want, all of a sudden it won't let me the option to lock in is completely grey and i get a dodge timer even though i was ready to play, have any of you encountered this bug? It's annoying getting 6 minute dodge timers for no reason