Apps detected as Trojan by Microsoft Defender: Opinion require

Hi,

Last time, my apps was detected as malware by Microsoft Defender (MD). But at that time, we just submit the file for analysis and then MD no longer detect my apps as malware after the ticket close.

However, for my new revamped application from previous version, the analysis failed and tell me that my apps contained malware. It is a VPN application that alter the virtual network for tun interface.

Any thoughts or approach that I can take from here until I MD remove the false detection?