I asked Videoslots to send me my chat history to prove that I haven't just made up a story mixing up Videoslots chat with Royal Panda chat regarding max bet restriction.
Here is my chat with Videoslots from 14th of Jan (thanks to Videoslots for providing):
10:17 Your Question: Hi, could you please advise if the bonus I received can be used on any games?
10:17 Please wait, an operator will be with you shortly.
10:17 You are now chatting with Jonathan F (Customer Service) - English
10:18 Jonathan F: Hi Zo***, how are you?
10:19 Zo***: Hi, I am doing fine. How about you?
10:19 Jonathan F: Good to hear. I am fine too thank you.
10:20 Zo***: Can you see my question?
10:21 Jonathan F: Yes sir.
I am checking your account. Kindly one moment.
10:21 Zo***: OK, thanks
10:25 Jonathan F: Thank you for holding, I am checking it out with the correct department.
10:27 Zo***: ok
10:30 Jonathan F: You can wager it in any games but progressive jackpot games.
10:30 Jonathan F: So no Progressive jackpot games
10:30 Jonathan F: And you will get more to your contribution by playing in slots and videoslots.
10:30 Zo***: I see.
10:30 Zo***: Any restriction on bet size.
10:31 Jonathan F: We have an automatic bet protection. I will tell you what the limits are.
10:32 Zo***: that's excellent
10:32 Zo***: thanks for your support
10:32 Zo***: that was all for now
10:33 Zo***: bye-bye
10:33 Jonathan F: Thank you too. And sorry for the delay sometimes.
10:33 Jonathan F: Bye to you. Have a terrific day!
I know it does not change the fact that I did not ask this at Royal Panda and made overbets, but at least it shows that I did not fabricate the story.
And one more thing. So there is a possibility to make a bet protection system which would prevent the breach of max bet rule, but I guess it is obvious why most casinos don't use it.
Nevertheless, I have contacted Malta Gaming Authority to have their view on my issue as it does not sit well with me when an online casino treats me like a criminal (confiscating deposits, which should be the last resort for serious misuse of the casino).
I will keep you updated about the outcome.