I'll share some information why you're customers are seeing the message, In Stride Bookkeeping.

In QuickBooks Online (QBO), sometimes you may observe some new changes when navigating the software. We always want to provide a new and improved functionality while addressing existing issues, and for our customer's best experience. That's the reason, every now and then there are updates and upgrades for new features.

If you don't want to explore the product, you can click the No thanks button to proceed working with QuickBooks.

Furthermore, you can also check out this article if you'd like learn more about QuickBooks Payments. I've added this article for more details: QuickBooks Payments FAQ.

Let me know if you have any questions about QuickBooks Payments.