It is necessary that there were more of them because the topic itself is quite active after the official first post of OP. But I would like the reviews to be written not only by BTT users with newbie status, but also with other statuses that have been on the forum for a long time. This is something to keep in mind as BTT advertising is highly targeted and therefore effective. I am also of course saddened by the list of European countries from which the service cannot be used. But this does not mean that the project will be well advertised for other countries.
And you should probably also open a topic in local forums of countries where you can use it without problems.