Non-profit account is suddenly an Education account?

I recently received an email stating that my student subscription will expire soon. However, I did not have a student subscription, nor have I ever. My account was created via TechSoup way back in 2016.

I expect the explanation is that someone did something in the account database that added a student flag or something because the plan hasn't changed (that I can tell at least), and while I don't regularly look through my account information, I don't recall ever seeing the Education Information section before I got the email.

The reason I expect it to be an error is because it says "Student until January 1900" which is preposterous and such a value should naturally be prevented through conditional checks and verification measures. The School field is also blank, which probably also shouldn't be possible if the account was created through a normal process.

Since my account is nearing 9 years of age, maybe TechSoup was originally giving "special" student accounts? And 8 years + 1 year grace was just silently counting in the background?