QR code link without "bitcoin:"

In browser (Opera, Explorer, Chrome) when I placed order i see QR code that i can click. But the link looks like : https://bitcoin adress..
In the settings i see also: <a href=”//{{{BITCOINS_ADDRESS}}}?………
and the most interesting fact that i see <a href=”//{{{BITCOINS_ADDRESS}}}?…….. in gray field next to field that i can change..??

But it should be: <a href=”bitcoin://{{{BITCOINS_ADDRESS}}}?

I am trying to add “bitcoin:” before //{{{BITCOINS_ADDRESS}}}? in settings but it disappear after i save it. ???

In bwwc-bitcoin-gateway.php i see correct line <a href=”bitcoin://{{{BITCOINS_ADDRESS}}}?… and I have ho idea how is it cuted and by whom.

Any ideas?

https://www.ads-software.com/plugins/bitcoin-payments-for-woocommerce/