WVA9 Bandit 1200 K1 clutch slips

Moin Moin, I bought a Bandit 1200 K1 for my better half a week ago. Test drive and drive home (about 10km) ran smoothly. Today I did the first big test drive after some smaller work. After about 40km the big one woke up. The clutch came always later until it started to slide and finally did not pack anymore. After longer cursing and looking (about 20 minutes) the pressure point came back slowly and I could get home I arrived at the garage. 1 hour later everything seemed to be normal again. Pressure point as usual. However, I didn’t want to trust the moped any more. Running power approx. 32000km, oil change 07/18 Can anyone help me with my problem?