they have an improved consensus algorithm that does not require large computing power.

Republia-DelegatedProof-of-Authority (RdPoA) + BFT (Byzantine Fault Tolerance). in technical paper there is all information

In the network nodes and master-nodes are operating, they can mine coins, recording transactions in blocks.

wow..they put so much effort into that site and wallet. this is a interesting coin. the ico outcome will make it clear if the community also likes it. i do.

admins of Telegram group wrote that we don't have to pay anything. Everything depends on the rating.

Does the Republia ecosystem have even a rating system?

and what it takes to become a master node?

Thank you! but do you know what the rating goes up for?

I also heard that you need to freeze money in your account to become a node or a master node.

no, a part of your balance.