Hey! If you'd rather not set one up yourself you'll likely need to rent a VPS from a service provider. I use OVH.com - but there are several. Try googling "VPS".
It should cost around $10 a month to start - at this price the VPS won't be able to handle much, just make sure the browser tab is minimized after the game's running and you'll be able to do your testing. I wouldn't recommend upgrading the VPS until you need to.
You're free to configure the VPS with an OS of your choice. Mine is using a variation of Linux, and I have remote desktop + chrome installed on it which allows me to go in and navigate to the site. Most service providers support teams will help you get this setup if you're having trouble.
Hey! Thanks for your help!
I just want to make sure I'm taking the right steps. I'm looking at OVH and I see the VPS Cloud and VPS Cloud RAM. I'm assuming the RAM version is upgraded performance and I should stick with the basic for now?
Also, can you tell me if I would be able to go with the Linux option and set it up quickly having zero experience with Linux? Or should I just stick to Windows?