Can't import my account, data, typing behavior, theme, etc. from old phone!

Problem: THREE different account IDs! I can't determine how to log into my old SwiftKey Account on my new Android phone!

Here is the problem: I've been logged into SwiftKey since 2017 when I got my last mobile phone. Let's say, hypothetically, the e-mail address is: abc@gmail.com 

I click on that e-mail on the account settings/overview of the old phone and it shows me an account ID ending in "AAA" (made-up for simplicity's)

When I now log into the new phone with the Google Login button (I first assumed I used this option in the past but I can't remember!), I log in with my main Google account which goes by abc@gmail.com. Okay, so the Account ID shown on the new phone ends in "BBB". Obviously, since they don't match, it can't be the right account. Trying to type also appears as if it knows nothing about my typing behavior.

Okay, so that's possible. Next, I try the Microsoft button to log in, as I expected, an account has been created with that abc@gmail.com username, but I log into outlook to check on it and set a password. Here, the account ID is yet another and ends: in "CCC". 

I'm running out of ideas. What other way could I have used in the past to login/create my account on SwiftKey? I would very much like to avoid losing all of my data. I don't know how to safely retrieve the cloud data from the old phone. As far as I understand it, there are no local backups or anything I could import myself. Please help.