AUP Virtual Coupons don't give user a choice

If I set the AUP plugin to virtual coupon mode, customers can apply a coupon and AUP points to the same order. Great!

However, there is no checkbox whether they want to apply AUP points to the order. Its just automatic. Some users want to save their points and not apply them to their next order.

Shouldn't there be a checkbox to use AUP points in virtual coupon mode, just like there is when this mode is turned off?

That's indeed how it works.
In virtual coupon mode the points available as assigned automatically if possible.
There is no option to make that a choice for the user.
That would need to be developed in the plugin in the future.