As an example "unexpected surprise" I can add my situation with some gambling pages. By the law, on the territory of my country I can gamble on the pages approved by government (this pages got licenses). For example I can not register or even open sportsbet.io page, as my provider blocks that page. But I can register on roobet, betfury, duelbits for example. Another but - I can play slots and table games there, but betting sections is "restricted for my country". On one hand I can gamble there, on the other these pages are restricted for my country, however they are accessible.
Advice - when choosing a casing, select the one where you have full access to offered services.
You should add besides full access there should be a good reputation if that's the only criteria you will end up playing on casinos with bad reputations like 1XBIT, I'm glad that I'm in a territory where I can access the majority of casinos listed in this forum and I'm playing on some of them when checking a casino be sure to read reviews coming from the community and from gambling reviewers which write fair reviews.