Minimize window in notification tray on start - linux - ubuntu 18.04

Hello,

Installed Cryptext on ubuntu 18.04 and ubuntu 20.04 then created cryptext.desktop file in /usr/share/applications folder as shown below:

```
[Desktop Entry]
Version = 1.0
Type = Application
Terminal = false
Name = Criptext
Exec = /home/user/.criptex/Criptext-latest.AppImage --hidden
Icon = /home/user/.criptex/criptext.png
Categories = Application;Network;
StartupNotify=true;
```
Then managed to make it run on start, this is depending on which linux version is used and at this point this is working fine.

Problem is :
- Cryptext window always open when system starts.

Question is :
- How to remedy to this ?

Thanks by advance.

Best Regards