I signed in my acct. and realized that I was in the Canada system. I'm a US citizen. Is Turbo Tax mixing up US and Can filings and is that why my return/stimulus is late?

I only realized this because my filing appeared to be gone. Then I started another return just to verify what was happening. Sure enough, I was in the Canada system. The next time I signed in I was back in the US system and my filing was there. But, now I'm getting email from Turbo Tax Canada urging me to finish my return. I'm in the US and I am a US citizen. Very strange and very concerning!