It’s your setup somehow connecting you with other previously suspended account.
Check and clean up:
1. Use fresh VCC
2. Try different VCC BIN
3. Change your billing address just to test
4. Register on a different IP
5. Use clean browser
If it is still happening then you’re just caught up in between other people’s spam activities and your registration may be marked as suspicious for being somehow related to these spam that is happening, try to register on another time.
The best way to bypass this is prepare yourself to appeal their suspension.