Can I pause my subscription for the summer and come back in September?

There is no pause button, but the effect is close. Cancel from Settings → Plan & billing and your page pauses at the end of the period you have paid for. Customers then see a polite temporarily unavailable screen instead of your menu, and no orders are taken. Your menu, settings, customers and history wait, and the billing screen stays reachable. Choose a plan again in September and everything is exactly as you left it on the same address, so your printed QR cards still work. The one thing to know is the POS add-on: it is a paid year that keeps selling even when the plan lapses, so a paused plan does not stop the counter.