First, kudos to Immunet!! Probably the best antivirus out there and has been for several years. This is coming from an expert user with 27 years of computer experience!
Just got a spanking new Zenbook Pro with a 4k screen. Same scaling issue as the others, its tiny! Your coders have to get on this one asap! Yes, we can change the res. but it's only a workaround, and 99% of users don't understand/don't want to understand, this kind of hassle. Only 2 apps that I have installed had scaling issues so far. Yours, and a low level formatting utility from 2013! Before you know it, 4k is going to be everywhere, so time to put this one to bed!