They do allow it, and in fact they have a VPN-instruction page where they recommend VPN countries for you to use and some VPN they recommend you to use.
https://betpanda.io/en/promo/vpn-instructionsTheir moot is anonymous crypto casino so there's no surprise they would allow their players to use VPN and as they say, they value their players privacy.
However I think they might require you KYC if they suspect you to be fraud or doing something unusual. I think you can't voluntarily submit KYC as I double check it and there's no option where you can submit it.
They allow VPN use but it does not mean they allow all people globally to use their casino. All casinos have restrictions on some countries and areas so even Betpanda.io allows use of VPN, you must know of this principle and be careful as well as disciplined with your practice. Don't log in your account, and turn on VPN to any address belongs to restricted areas, this action can trigger their bot and your account might be locked and under investigation by their team.
It, if happens, will not be your comfortable experience so prevention is better than cure, let's be careful practically to avoid that action.
It is written in their ToS at point 2 - YOUR OBLIGATIONS AS A PLAYER
https://betpanda.io/en/info/terms