All I found that was similar to my Application Settings was;

<userSettings>
<IMEICheckerSalg.My.MySettings>
<setting name="ConnectionString" serializeAs="String">
<value />
</setting>
</IMEICheckerSalg.My.MySettings>
</userSettings>

I have a Settings variable called ConnectionString, but it seems it's blank. Also I have 3-4 other variables stored in the application settings, but I can't find them.

My VB application reads out the settings from somewhere, but WHERE?