Curcy auto update and Loading price mask

Hello,

I have a few questions about the Curcy multi currency plugin.

-On the Genereal tab: what is the function of the “Loading price mask” feature?

-On the Update tab: my auto update key says that it will provide automatical updates until August 21st 2023. What happens after this date? Do I have to manually check if there is an updated version of Curcy, and then download it?

-On the Update tab: I have set the “Auto update exchange rate” to 1 day. Will this stop working after August 21st, when the auto update key becomes invalid?

Thank you!