Has anyone figured out why PlusNet aren't doing VoIP?

[#1]

I note on ISP Review, OR has apparently push the PSTN offload date back to end Jan 2027. Guess that gives us more time to concider options.

Good news in general (I don't accept the main reason given for the cessation anyway), but won't help PlusNet customers if PlusNet won't allow any contract renewal that includes 'phone calls, which I understand is already the case.

I've seen good feedback on voipfone, so they may be another option. I have not used them myself.

[#2]

but won't help PlusNet customers if PlusNet won't allow any contract renewal that includes 'phone calls, which I understand is already the case.

@G6JPG-0 AFAIK PN are still allowing contract renewals including phone service, providing there's no change in product. You may not be able to do it online, but ony by calling COT