Hi,
The red circle indicates that the plugin is not compatible with the DDK currency.
You can't activate it, if the platform is not compatible with the currency, you can't force it (not our side).
So if you creates a configuration for "paypal pro" and you are using the currency "DDK" in the front-end, you won't be able to see the payment method in the list.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.