No response Custom Licensing (UDN)

We are a company that mainly uses our original multi-platform VFX engine called SPARKGEAR to develop games.
We would like to participate in UDN.

So we tried to contact to this URL(Unreal Engine (UE5) licensing options - Unreal Engine) a month ago.
But nobody has contacted us either.
What is normal response time? Can anyone contact us?

Thanks.

■VFX engine SPARKGEAR (all pages are in Japanese)

Just to be clear - you want access to the paid Unreal Engine developer support network, but you are not using the Unreal Engine?

Thank you for asking.
We are using Unreal Engine for VFX middleware development and game development.

We are not using the paid Unreal Engine developer support network right now, but we would like to participate in it.
Because we need the support now.

I understand - let me see if I can prod someone.

Thank you so much for your corporation.