The following is how LinkedIn suggests you fix Your Duplicate Account
What do I do if I have a duplicate account?
You may discover you have more than one LinkedIn account. If you get a message that says the email
LinkedIn offers several different types of accounts, including:
Free Personal Account – which is what most people use.
Three types of premium accounts
and three types of Job Seeker Accounts
When you are setting your goals as to
Most people joined LinkedIn because someone said they should, or because it was one of the social mediums they thought might help them BUT,,, they never thought about WHY the set up a LinkedIn account and what was their GOAL