Error 403 when adding apps from rockmods.net

Describe the bug
Adding any app URL from rockmods.net results in a 403 error. The site appears to block Obtainium's requests, likely due to bot detection or JavaScript rendering requirements.

To Reproduce

1. Tap "Add App"
2. Enter any URL from rockmods.net (e.g. https://rockmods.net/apps/capcut-mod-apk)
3. Error 403 is returned

Expected behavior
Obtainium should be able to parse the page and detect the APK download link.

Additional context
The URL loads correctly in a browser. The issue seems to be that the site blocks non-browser requests or requires JavaScript to render content.