How to contact hostbill in this situation

[beautiful]

I have access to all my plugins I purchased in 2012 and I can download them
but one particular plugin when I click on it to download it just takes me to Blank page
does not prompt to download I have tried chrome, firefox, etc

Please see this video

https://nofile.io/f/dOw2sNbEfjZ/Untitled.mp4

It is Dedicated Server/Collocation Manager v2 License

Now in this situation what am I supposed to do? 

[d4f]

Use the support ticket system or the bug report system on hostbillapp.com  or contact via email at sales@hostbillapp.com

[beautiful]

I contacted long time ago , reported but but no answer . Waited for 6 years to see if this company can be trusted but lost hope. Won't renew software and left for clientexec .  For now I just keep playing with the software    Unfortunately hostbill is too risky to use