Using relative URL for buttons

When I set URL for button, I can't set relative one, like /contact, it says
'Invalid URL: URL schema is missing in /contact. Please add one of the following at the beginning: http, https, ftp, ftps, gopher, mailto, news, prospero, telnet, rlogin, sftp, tn3270, wais, mid, cid, nntp, tel, urn, ldap, file, fax, modem, git.'

Hello,We’ve resolved the reported issue and have updated the latest files in version 1.0.1. Kindly take a look at our new release.

Best Regards,
JoomlaPro Team

It does work indeed, thanks.

Hello,

Thank you for your prompt response. Before proceeding with the installation of the new version, please make sure to uninstall the previous one. We've addressed the issues you mentioned, and the updates are now ready for use.

Best regards,
JoomlaPro Team

Thanks, it's super.

When I uninstall the package itself, I get this message:

Invalid client identifier specified in extension manifest.
Package Uninstall: This extension is missing or has already been uninstalled: mod_jp_yootheme_alert_message.zip
Uninstalling the package was successful.

It removes the component, but not the module.

Hello again,

We’ve resolved the uninstall issue. Please update the extension and try uninstalling it once more.

Best regards,
JoomlaPro Team

Now it works, thank you. You have one of the best support in the Joomla community, you rock!