A bug for Asecsion mode

I was playing Asecesion mode just then, but somehow my internet discontected for a while so it took me 5 min to fix it. but After i reconnet my internet I can't log on League anymore, and i was waiting for League to reconnect, but it didn't happen. Then it actually went more laggy so i have to restart my laptop, but still it was so annoying that made me lost my match! So, plz help me fix it. This never happened to me before.