5w30 instead of two-stroke oil

Hello dear community, I only had a scooter for 2 weeks and had a problem driving today: an “oil lamp” flashed/lit. So I went to the next gas station (was one of Shell) and asked the (now hated by me) tanker what I should do now. “Nice” as he was, he went out with me, looked at it and then sold me “Shell Helix 5w30” for 25,90€. Then I did it there of course, drove home and then in the Inte Well, it turns out that there had to be two-stroke oil in it…What should I do now? Pump out and two-stroke oil in it or is it just a waste of money, but not so bad? I really need your help [Roller: TGB Pegagus Corona Sport 50ccm Two-stroke 4PS] LG Moritz PS: Stupid part is only causing problems… Yesterday I almost laid down because the main stand fell off and the rear wheel blocked… (ADAC had to come and has the one with nem A week ago the V-belt was torn. I got sooooo a lot of frustration because of the stupid thing.