Aadhaar-pan linkage failed

i have one client whose name in PAN is RAJ PAL GUPTA and in Aadhar card name is Rajpal Gupta except this all details are same in both dob and gender.But there is no option shown for OTP in case mismatch and linkage is failed after submitting detail and site showing msg to change pan detail or aadhar.But i think this is minor mismatch between RAJ PAL and RAJPAL. so how to link this pan and adhar no.Is there any email id to contact efiling team ? or what is solution to this problem? please help asap.