Allow app to connect to usb device on android

Hi,

i have a samsung galaxy tab s connected via otg usb to an ethernet printer.

everything works fine with loyverse.

i can print and all.

but i have often a window of notification which appears saying :

" allow the app loyverse POS to access the USB device?"

a check line : "use by default for this usb device"

if checked then a grey line appears "to change your default app settings, go to Settings > Applications > Default applications"

and then i have to click ok to continue.

 

how do i get this notification to not appear anymore?

i went in my default app settings and i dont know what i am suppose to do???

 

if someone could guide me would be awesome!

thank you in advance

 

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