Cannot Access Page
We do not know which email our account is linked to. We don't know how to access our Google Plus Business Page which is linked to our Youtube Channel.
How can we access this G+ page ??
The support team says they gave us access but now we have to create a new G+ page. We want to access the page link above so we don't have duplicate pages. now we have duplicate G+ pages and still no access to the page we lost access to. We have tried email and phone support but we always are told to create new accounts, this makes duplicate G+ pages and Youtube accounts.
Re: Cannot Access Page
since the URL you provided isn't a verified local listing there is no direct way to get the credentials decovered by Google.
But fortunately there is for the same address a verified listing with the same name
I guess (but am not sure) the latter listing is managed by the same account.
In case this is managed not by you but by "someone else" you can apply this procedure: "Someone else verified my business"
Helmut Geissler, Google My Business Top Contributor | my G+ profile