The buttons on screens like that are images, so as long as you make an image with the right text you can put whatever you please in there.
As to Text in the rest of it (ie prompts etc.) then very likely not, there's nothing to fix, it's working as intended. You would have to put in a feature request on the GameGuru GitHUb page. But don't hold your breath, it will be a long time coming if ever, there's about a million features they need to add before that.
i7 7700,k NV1070 8GB, 16GB 3200mhz memory, 1x 2TB Hybrid, Win10.
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i5, NV1050 4GB, 8GB memory, 1x 1TB HDD, Win10.
i3, Intel 4000 series graphics, 6GB memory, 1x 500gb HDD, Win8.1.