The Shopify connector works a bit differently from the other connectors where this one takes some time to cache the account data until the new account can show up.
If the account is still not listed, please try force refreshing for account data once more using these steps:
Forcing a Refresh for Account Data (do not skip the last step!)
The account should be available by now.
I tried everything and still can't find the account
Please then submit a private ticket to Supermetrics Support for further assistance. Please note in the ticket that you've completed all the steps in this article so we know you already tried these.