OK, you are right, the OP was struggling in April '20, but if he is active and would like to live on their site again, then we will help them.
I tried to enter the website right now but it doesn't load and I receive connection time out error. You have to fix your hosting issues or change hosting. Good luck
not enough information. Although everyone seems to agree that keywords and backlinks can help a website rank, if your forum is not active, none of these factors will matter. Your website's search engine rankings may suffer if you don't use social media. Another indication that your website might not be as trustworthy as your rivals' is a lack of social media activity. Engagement on social media increases your total trust factor in a similar way to backlinks.
If you will check his URL with https its giving time out error but if you will check his URL with http ..... then i am seeing that its redirecting to another forum. This is also issue because he is loosing some previous potentials customers by this https issue.