Please give us more information, As for what version is your hotel. Because If It's V26, It's basically you need to setup your DCRs or you didn't set it up right.
It's not necessary to purchase a VPS, Unless you want it 24/7. But you could just host it on your PC / laptop, You could portforward. But the only problem with that, That the hotel wont be up 24/7.
There should be instructions on how to set it up, It comes with the download. All you have to do is, Go into the /me.php file, Edit where it say's, " /client " change that to " api.php ". After you've done that, You'll need to edit the file " client " in the " Api_TheHabbos " folder. At the...
Open up the /me.php, It's basically just changing the links.
With the /client to, /api.php
Also, Open the TheHabbos_Api folder, Then there should be another folder, Which I forgot what's it called. There should be a file called client, Open the file & Just change /client.php to just /client...
I've had this happen to me, A lot of times. I've always just tried to re-install it, But there must be a problem with the images. On the CSS it probably isn't linked to the images folder.
I really do not know,