I purchased the Windows version and uploaded the file to VirusTotal. It gave me two detections: https://www.virustotal.com/gui/file/4da40fd5c643e9c7e771b896...
However, I have password managers, access banking websites, etc so I’m cautious of exes from smaller developers.
I wasn’t able to easily find the real identity of OP but the binary is code signed by a registered company it seems.
The software author should take a look if this is the case, for to change the packager's configuration (no encryption [if some algorithms in the programs are important, to protect them with through implementation, not packager ], or if the binary is small to not compress, or to adjust other params, etc), or to change of packager, or to contact with the antivirus company.