Please refer to your knowledge base article here:
Dhan now allows sHNI (small HNI) i.e. HNI IPO application of 2 to 5 lakhs.
But above knowledge base article still says that HNI IPO is not allowed.
I think you need to update it stating that sHNI IPO upto 5 lakhs are allowed.
Thanks and regards.
PS: 5 lakh limit is also because NCPI does not allow UPI ASBA mandate > 5 lakhs.