I paid for a year's subscription in January. Today I went to log on and they said my "free trial" was over and to pay for a subscription. What do I do?

Hi there, @eponineq.

I'm here to guide you on how to verify your account's subscription. 

Since you've already paid for the year's subscription of QuickBooks Self-Employed plan and got an error about expired free trial, I'd recommend speaking with one of our customer care team. They have the tools to verify your account and help you get to the bottom of this.

Here's how to contact them:

1. You can use this test account, then click Assistant.
2. Enter I need to speak to a human, then enter your concern.
3. Choose how you want to be assisted if it's either messaging or a callback.
4. Change the Name, Phone, and Email of the account.
5. Confirm the changes and wait for one of the representatives to get in touch with you. This is how it looks like:

You may also want to consider checking the support hours to know what is the best time to contact them at your convenience. 

I've added this reference page for your future task: Subscription management.

You're always welcome to tag my name in the comment section if you have other questions. Take care always.