Hi, I just coordinate with a seller to run follow their requirement about software, received a key with “xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx” and can cannot access “https://console.d5render.com/signin” following D5-team instruction.
Please help 
Hello, which seller did you coordinate with? Could you let me know their website or region?
Also, is the key a lifetime license?
Normally we can go to this site to redeem Pro code:
How to use D5 redeem code? - AnswerHub - D5 RENDER FORUM
I am not sure whether your key is valid, please let me know the above information.
Or you can contact support@d5techs.com for private chatting.