FTTC to FTTP Upgrade - TP-Link Deco X55

[#1]

I currently have FTTC (with my Hub2 Router using DSL on my phone line) and will be upgrading to FTTP with OTN being fitted on Friday.

The mesh network I use is TP-Link Deco X55 which connects by ethernet into my Hub2 with wifi disabled. 

Once the OTN is fitted can I get rid of the the Hub2 and connect TP-Link Deco X55 directly into the OTN ?

Are here any settings or credentials I would need to add on its setting is this possible ?

[#2]

Once the OTN is fitted can I get rid of the the Hub2 and connect TP-Link Deco X55 directly into the OTN ?

Are here any settings or credentials I would need to add on its setting is this possible ?

Its actually an ONT (Optical Network Termination) but , yes, you need to change the X55 WAN connection to PPPoE and enter your Plusnet credentials. Username is <youraccountname>@plusdsl.net and password is the one you use to access the member centre.