Router: Draytek Vigor 2860n
IP Addressing: DHCP6

I thought I had this problem fixed, but it turns out that it is not. I am trying to add the static IPv6 addresses shown below to LAN => General => IPv6 in order to make them available for use in my home web server, only I cannot get them resolving (adding them is no problem). - Can anyone help with this, please, and, ideally, confirm a working configuration for me?

/48 (this is what I was working with originally)

6F01:C260:D0A4::2
6F01:C260:D0A4::4
6F01:C260:D0A4::6
6F01:C260:D0A4::8
6F01:C260:D0A4::A

/64 (this is the format that my ISP has recommended, but which is automatically shortened to /48 format by the router and which still will not resolve)

6F01:C260:D0A4:000:000:000::2
6F01:C260:D0A4:000:000:000::4
6F01:C260:D0A4:000:000:000::6
6F01:C260:D0A4:000:000:000::8
6F01:C260:D0A4:000:000:000::A

I am aware that there is a Draytek guide on this, only using the WAN adapter, and I have followed that too (using WAN2 because WAN1 already has a PPP IPv6 configuration), but the interface will not come up and I have been unable to make it work; so I guess that I am looking at somehow getting one of the following three options working:

i:) somehow expanding the PPP out to give me several IPv6 addresses in addition to that assigned automatically by my ISP for the PPP connection
ii:) adding static IP addresses as a separate item to the PPP configuration (ie: using WAN2)
or, iii:) adding the IPv6 static addresses to the LAN side.

- solution, of sorts, still not working properly -