It's clear, you're on prohibited location/country.

It's better to not-register, because a new account is right now required to do "KYC". So, even you're successful register to the site but "KYC" with ID from prohibited country they will rejected you.

You could be facing some problem in the futre.

Live RTP is a nice feature, and I myself like to play slots on some gambling platforms where you can see it. I play on both, Highest RTP games and Lowest RTP games for different reasons. The former I play because I think: "Wow, everyone's winning on this slot! 350% RTP for the last 24 hours! I should try my luck with it too." And the latter I play because I think: "Long time no wins? Only 6% RTP? Someone should win soon! Maybe it will be me." But, of course, all that is just for fun. I know well that your chances of winning on a slot don't depend on on other people's(or yours) performance on it during the last 24 hours.

So, it's not about transparency. It's only about more fun.

We have seen this kind of scenario in this forum for multiple times already, They are just putting themselves in an additional risk. Imagine that he have used different locations assumingly using VPN but Stake still detect and prompted you that you can't register to Stake because of your country not being eligible. Let's say that you did register but when you withdraw, Stake will certainly ask KYC because they can obviously see and detect your IP address which I assume on a country that isn't allowed to use stake or detect that you are using VPN to access stake. In the one who tried this kind of risky move hires other persons identity just to withdraw from it and most of it failed and the next thing we can see is a scam accusation against stake LOL.

Guys just use a casino that is available in your country and not deal with this kind of hassle.

Ohh right, Eu country cannot register on Stake? Only from Nigeria et similar? Just asking

Stake is not a Nigerian based company, if I recall well, I think the company is based in Canada, I stand to be corrected just incase I am wrong.

And yes, though Nigeria is not blacklisted by stake, possibly because Nigeria authorities don't really care about gambling and don't have any regulations I know of, guiding gamblers in the nation or casinos that operate in the nation, so every online casino as I know currently have unlimited access to the Nigerian gambling market.

But then, this is not same for several other countries out there, some countries have really strong regulations guiding their citizens in gambling and also the casinos that wish to operate in such a country, but when the casino can not meet up with the regulatory requirements of a country, then they blacklist such country and stop potential users from such a country from joining the casino, as it is currently with your case.

RTP is just a factor that gives more credibility to the platform. Most of the users never consider, and prefer to play the game they like. Loss happens even with the high RTP games, as the outcome is all depending on the luck from a players view. From the developer view it is different. Myself just gamble and end up losing/winning and never mind of the RTP. Maybe I should give a try and find the difference between games with high RTP and lower RTP.

After passing KYC i recived extra 3 usd last month, sounds like 3+1+1+1+1= 7 each month for doing kyc

Do not try to force things up, if for whatever reason you are not allowed to register at stake then simply stop for the moment, you could read the TOS and see if your country is on the jurisdictions which are not allowed to gamble at stake, or you could ask the customer support if there is something wrong with your account, however if for some reason you are still not allowed to gamble at stake then it is better for you to move on and look for another casino in which you can gamble without the use of a VPN.

Even though using a VPN is still good and there are no significant obstacles here, I think that still doesn't guarantee there won't be problems for your account in the future.
I think it would be better if you don't really push it until there are further updates on this site in your area than you receive something you don't really want when later there are problems in terms of withdrawals or something else in the end.
it's still possible if you just want to have fun but I think when there is a clear advantage later it will definitely be used or withdrawn isn't it.

Even he can find a VPN with acceptable country.

Any new account right now on "Stake" need to passed "KYC". If the KYC are from restricted country he still gonna to be rejected and stake are gonna to refused him playing on their site.

Unless, he also have ID bought from the country VPN he was using. Off course it's just like putting a gun in his head, in-case there has some problem.