@Jojanonone 

Hi, thanks for posting question here.

May I confirm hardware version of your RE200?

After confirmation, it is a pity that Archer NX200 only supports Easymesh instead of Onemesh currently, so if the range extender only supports Onemesh, they will be not compatible to set up Onemesh network.

Thanks for your feedback and we have delivered it to the related department for any possible optimization.