I have an A-10 router upstairs and an RE220 and an RE315 in the gaarage and basement tied to the router. However, when attached to an extender, I can't connect to internal devices on the router's...

I have a longtime registered domain name and I just canceled my longtime static ip with centruy link. My DNS provider is DNSExit. Can I use DNSExit's dynamic DNS service with my Archer? Thanks Oakguy