Cannot log into my shopify

So I have a shopify account registered under an email I created specifically for my store.

however I have not been on it in a long time and am trying to get back in.

I know my password and am able to get through that step, however whenever I am sent an authentication code to fully log in I don’t know what to do.

I don’t see one on my authentication app, the email I have for my store is not connected to any of the authentication apps I have. So there is no code I can use.

I’m not sure where to go from here and am definitely in a deep, deep pickle as they say.

please help! Thanks.

No:(

can you help me?