@p1pwe assuming you are in the UK (Ireland is different) its not the beat choice of router for a Sky line but it will probably work set it to use DHCPv6 PD you do not need a log in string. Roughly 80% of Openreach lines support this method. If you search online you should find walk throughs for TP-Link routers.
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
