If you have entered your account info into the Account Explorer and find that your information does not match what you are seeing in Pinterest, please remember that we aren’t scanning accounts and pins every day in real time.
There will often, if not always, be a lag, especially in the beginning of when you upgrade and add your account to My Accounts.
It's a lot of data and takes time to crawl and populate.
And, there’s a 30-day cycle. Over the next 30 days, the pins, boards, and account-level statistics will be updated.