Hi Josh,
First of all, I am really sorry to hear your bad experience with the said printer I hope the following suggestions would help.
1. Take a break, like about an hour or more just to cool your self down, this helps believe me I’ve been there.
2. Buy glass plate that fits your heating bed, you can get this from picture frames.
3. As for the spacer you may buy it online, or as long as the spacer you are placing is as thick as your glass plate anything would do as long as it fits at the back of the zed axis, there are a lot of instructional video online to show where to put the spacer.
4. Use adhesive to print straight to glass, like hairspray. Spray on the glass at least 3 coats while glass is cold.
5. I use silicon tape to keep the glass from sliding but if it is not available to you, you may use clips, just make sure it is not located where the extruder nozzle travels.
6. Re level your build plate, I know it is frustrating but since you installed a glass plate, there is no way around it.
7. Preheat build plate to 110 C and Nozzle to 230C , wait for at least five minutes, then hit print.
8. Do not remove the printed object right after printing, you have to allow it to cool down to room temperature. You may hit the bottom of your printed object with a chisel if it does not come off.
Hope this solves your problem. I have the same printer but with a glass build plate, it works fine, but my problem right now is the opposite of yours, since I am having problems in removing the printed objects. Good luck and don’t give up.