Once you are a licensed customer & if you purchase the installation service, they will set up the forum for you.
Or you can go with 3rd party people for installation & customization. I also do offer such services, if interested lemme know.
For a naive admin, i would say Pixelexit because of the simplicity in their framework but your customization can provide endless results, my fav theme from them is obviously TAZ.
For a bit advanced user Audentio will suit, since they have a lot of customization's where most of the admin's don't...
Looks like a deface to me, Were you on the latest security patch?
Remove the files which looks unfamiliar to you & change your admin, cpanel, ftp, database passwords asap. Then re upload all xenforo files & do the upgrade.
Do a health check of your board after finishing what i suggested.
This is more of my fantasy, if you are not in to fantasy feel free to skip this.
I always had this in my mind even before reddit became a phenomenon. What would happen if all the popular forums are combined in to one? like a social network without changing the way of how they work. If forums...
Looks nice gemma, i liked your theme customization even though i am not a fan of dark themes. Consider optimizing your images, your page size is more than 5mb & it takes a wee longer for me to load.
OT: You should have named your site Gamerschat/hut or something similar, since major of the...