This is a small request but it will save other users like me who couldn't figure out what we are doing wrong.
When you copy and paste a URL or IP on the DNS Manager and there is a space your system returns an error saying it's an invalid IP or Domain. It is giving a false error when the IP or URL is correct and there is just a space at the end.
I recommend you remove any whitespaces before sending the inputs through your validation system. This will save a lot of users headaches.
Thanks!
- Dawson