I seem to have locked myself out of my own app

I seem to have locked myself out of my own app

I created an app under my personal account then authorised my work email address to be the administrator and demoted my personal account to Manager. What has now happened is that regardless of which account I sign in on, it reverts to my personal account and tells me I am not allowed to access the app. I had expected that my work email address would become the CEO/Administrator and I'd go from there...

I realise now that I should have kept my personal account status as CEO and left the work account as Administrator, but now I have no access at all... Is there a way back from here?

Thanks