@hw_user Not sure their is a "free" option they only list 2 subscriptions available but it does say you can have a 1 month free trial and then just cancel it so thats one way, another way is most ISP...

@Prasenjit Hi, I too own an Archer C80 (EU version) 2.20 / 1.13.15 Build 240812 but I use it for WDS function only (also have Archer AX73 main router) I would try to downgrade firmware if possible...

@pxr5164 Just as @terziyski has said it would be best to do a backup config of your "current" v1 main router and note down your ISP info (username and password etc) and any other specific changes...