Uberpos closes order after payment

Hllo,

When i set a payment for one of my products (example 500gb wd) wich costs 500 euro,

I type 50000CA (for cash) and press enter. Order dissapeares and comes into order management.

After i open the order from ordermanagement i get my print popup and its set to complete.

What am i doing wrong or is this a real bug?

Friendly greetings.

Kinda need it quickly