Request need help WHMCS Checkout Problems

[mroz]

Evening guys I have some problems with the WHMCS I deleted billing details forms on the checkout page which I don't need. Unfortunately I get an error like this. I also used the type = "hidden" value "NA" in the client register success can someone help me there? Thank you

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~Edit: problem was solved thanks!

 

[resat82338]

Thank you very much