The last time I played LoL was almost 4 years ago. I reinstalled the game last week , and I've noticed that my profile level is 5 (now 6, I played two games, was 30 if I remember correctly), I've lost all my unlocked champions, my match history is empty (I had ~100-200 games played) and I have no runes. At least the system remembered what was my avatar in my profile which is nice :)
Yes, I connect to the correct server, with the correct account (the only I have).
I don't know what should I do, I haven't found anything similar to my problem on the support page ( https://support.riotgames.com/hc/en-us ).
Thank you for your help!