I’m using 000webhost to try things out and see if I can make it work there. My shortener is hosted here:
If you try it out, you can see that neither can I remove the default links nor can I add new ones. If you do try, it’ll keep loading forever. What can I do to fix this?
See my previous answer : your setup is most likely not installed correctly.
Also, https://github.com/YOURLS/YOURLS/wiki#support--troubleshooting
Thank you, @ozh! That was indeed the issue. I tried a fresh install and it works fine now. I should have done this before posting.
Thank you for your help 