Compatible with POS for WooCommerce?

Hello there,
I have the following questions:

1. Is the plugin “Flexible Quantity – Measurement Price Calculator for WooCommerce” compatible with the “Point Of Sale for WooCommerce”?

I have set our yard goods for the online store with the measurement plugin and noticed that you can now change the quantity in the store (e.g. instead of 1 only 0.7), but no longer in the checkout. There the message appears: You cannot add another…… to the card.

If you remove the standard input field by setting a checkmark, the problem occurs in the checkout.
However, it is important to me to remove the standard quantity input ( -|1|+ ) on the product page so that only the new input field is visible, because it is confusing for customers when they see 2 different input fields.

Is there perhaps another way to remove the standard input field for the meter goods?

Have I perhaps not edited the products correctly or is it not possible to use these two plugins?

2. Is there another POS plugin that is compatible with the Measurement plugin?
   (Then we wouldn’t have to edit every product again).
3. Are there two other plugins that are compatible with each other?

It is desirable that only one input field is visible on the store page. It can also be an empty field where the quantity can be entered manually.