WHMCS - Choose a Domain screen broken (theme issue)

[Boycot]

When someone attempts to purchase any package, the Choose a Domain screen doesn't work. From what I've been able to gather, it's a theme issue. I'm looking for someone who could look into this and fix it.

Please PM me if you can take a look.

EDIT (6/26/18): Still not working. :/

 

[tomo54321]

Here you go, just remove this from your CSS file and you're all good

 

[wwesn]

Is the js up-to-date in your theme as compared to the whmcs version? Also make sure your not using two jquery files in your theme.

If you need any assistance with whmcs themes you can find me at https://whmcsresources.com