We have full fibre broadband with Ogi. It works with their router and it initially worked with our Draytek 2765, but it stopped some time ago, a couple of months.
We don't know why or when it stopped as we have a VDSL failover. 
They use DHCP as WAN connection method. 1500 as MTU. They don't support 3rd party routers but you'd think they'd offer a generic guide to setting up a 3rd party router.
I can't see any way to attach a screenshot.

Initially, we had it working using DHCP, but ChatGPT is suggesting it uses PPPoE. The lack of documentation from Ogi is appalling.