Answer:

>> Hello,
>>
>> I really like your VPN. I think the only thing missing is adding payment via the Bitcoin Lightning Network. Is that planned?
>>
>> Best Regards
>
> Hello
>
> We currently don't support Lighting however we might add it in the future.
>
> Best regards

I wish Mullvad would enable Lightning themselves.

I've sent email them asking for it I believe twice. Will ask again next year.

Please ask you too!

Talkless

I think it's weird that they even ask for the account number since that's all that is required to login to your Mullvad account.

But the voucher option works fine. I just tested it!