Would like to update, but the installer cannot remove old version (requesting .msi file)

Hello!

I get the following message when I try to uninstall RDM 13.0.6 asking for "Setup.RemoteDesktopManager.13.0.6.0.msi"



I managed to download that exact msi file, but when I select it in the dialog it says "The file [...] is not a valid installation package for the product Remote Desktop Manager"

I managed to manually install 13.5 in addition to the old one, but I'd like to get rid of both and reinstall, because I'm having some problems with VPNs asking for a password all the time.


Thank you!