registration of huf

I'm also having the same problem with my HUF Registration.

The name printed on PAN is xxxx xxxx (HUF)

As special chrectors like ( ) are  not allowed on GST Site, I'm trying to Register for GST by typing name as "xxxx xxxx HUF", but I'm getting the following error:-

"PAN and Legal Name is not matching with CBDT database. Please submit PAN and Legal Name after validating with CBDT database"

As I'm typing the name as per PAN only, kindly advice what next should I do...