Subscriptions and 2 VTT

Hi there, 2 questions:

How can I delete a member of my contacts?

I have supersyrin subscription an I am using it with FGU. Because of the fantastic Beneos Battlemaps It might well be, I will use Foundry VTT too. Will I need another subscription for it too or can I use tha date with the tools of Foundry or third party with the ongoing subscription?

Thanks.

No Answers after 5 days?