You can switch plans from the plans page inside the Subi admin. Billing runs through Shopify, so every change shows up on your Shopify bill.
When you switch plans
The new plan starts right away. Shopify works out the difference for the rest of your billing cycle on its own:
Moving to a higher plan, you pay the difference for the days left in the cycle.
Moving to a lower plan, Shopify gives you a credit for the difference.
When you uninstall Subi
Uninstalling the app cancels your Subi plan. Shopify does not credit the rest of the billing period you have already paid for.
If you are thinking of leaving because something is not working, write to [email protected] first. We would like the chance to help.