Well, i would probably stop right there. Find another sales outlet. But if you do not know if they are authentic, then that is the first order of business. There are authentication services (not eBay-related) but i am not familiar with them.
Take some detailed pics and post them on the handbag forum to start. see link:
https://community.ebay.com/t5/Handbags/bd-p/luxury-handbags
If they pass muster there, then you’ll need to use a paid service to authenticate them.
Since you have already had removals here trying to list them, it would be a huge risk to attempt another go here. Once you have been flagged by eBay, you will be scrutinized twice as much on a forever basis.