Those of you who are struggling to link your EPIC to your profile. I was facing the same f**** problem, here is how I could finally do it:
1. Search EPIC online by using the EPIC number and city/assembly code etc.
2. Download the EPIC in PDF format. Pay attention to the name in downloaded EPIC. In my case the spelling was different from the physical EPIC I have.
3. Create a new account of non-resident voter by email id only. ( No need to give mobile number, OTP comes on email)
4. While creating this account, copy/ paste the first name and last name from the downloaded EPIC.
5. After creating this account go to profile and link EPIC number. It worked for me and I could immediately raise a request to delete the name using form7.
6. As soon as you submit online the form 7, it generates an ACK, make sure to download the PDF and keep it forever.
If you are not able to locate the soft copy of EPIC or it still doesn't work for some reason, you can do it via hard copy:
Search the BLO name of your area on the same portal, they have BLO's name and mobile number given and BLO is always a local guy. You can fill the hard copy form 7 and mail it to your family and they can give it to BLO. Only thing necessary is to get the ACK part at the bottom of form7 to be signed/stamped by BLO (That is your proof that you did what was needed) . Not sure if BLO's are given a stamp but one should ask for.
Also you parents/sibling can fill and sign hard copy form 7 for you, but it also needs to write the EPIC of the person filling the form on your behalf, which I am not sure because you never know that the guy working on your request is dumb enough to delete the other person's EPIC.
Hope it helps.
