to add up to the question above:

If NGINX not part of the deal,

What about OLS and Litespeed?

Only Apache supported?

can you clarify? Most of morden Wordpress Setup now using pure NGNIX. What do you mean "NGNIX not included in Appsumo Plan"?

Our WAF is supported by any web-server.

When we say NGINX WAF we mean another security solution based on web-server. It is another layer of defense.

As for current deal, we offer PHP WAF that is supported by all web-servers, including NGINX.

Thanks for confirming, then this is a perfect deal!