It's always better to read the terms and conditions of a casino before creating multiple accounts out there. There are some casinos that strictly prohibit creation of multiple accounts and if they find someone having multiple accounts then they might freeze funds of all those multiple accounts. I don't know if Betpanda has a rule like that but I know some casinos have strict rules when it comes to multi accounting.
Before using any casino it's better to read their ToS as because most times they are strict on their rules and regulations, most people always try to be smart to outsmart the casino owners by cheating and abusing the bonuses, such as sign up bonus, referral bonus or even weekly/monthly bonuses. Some uses their second account to cheat and overly every casino highly frown that.