Setting up revolut with Google Pay
Revolut cards of Cyprus are not eligible for Google Pay per Revolut FAQ and that's the reason for the message. 



  During the beta release, Google Pay will only be available to selected users from Belgium, Croatia, Czech Republic, Denmark, Finland, France, Germany, Ireland, Italy, Norway, Poland, Slovakia, Spain, Sweden, Switzerland, United Kingdom and Singapore. We’ll roll out Google Pay to everyone soon


(Cyprus missing) 


Revolut cards of Cyprus are also not eligible for Google Pay contact less payment per Google Pay FAQ 
There is a virtual card workaround if you wish to try (see spider 623 post) .
Interestingly, they are eligible for Apple Pay