I followed the below Account setting feature to enable Person Account.
This seems not getting saved even though I have followed all 3 guidelines. Then found this article explaining why we Cannot save 'Allow customer support to enable Person Accounts' setting
This is often due to a conflict in the settings of the "Authenticated Website" license. If so, please note it within your case to request the activation of the Person Accounts feature, grant login access to Support and our Support agents will assist with the next steps.
Accordingly, I tried to create a support request from the Dev. org. but when I try to log in, it logs me out, just after log-in with no messages.
Is there a successful workaround to get Person Accounts enabled in Dev. org. please. Appreciate any thoughts, Thanks.