if a developer want help and need to contact me to fix this problem i am willing to help. i know coding python, c ...
If you have problems with the characters / fonts
usually problem is not in the coding but the fonts used for the skin and LCD.
You can try to replace the fonts used in the LCD or in the skin with similar fonts that support the greek characters .
default font for LCD is analog.ttf in /usr/share/fonts
LCD coding is in /etc/enigma2/skin_user.xml
<fonts>
<font filename="analog.ttf" name="VFD" scale="100"/>
</fonts>
skin coding is in skin.xml file for addon skins in /usr/share/enigma2/skinnamefolder or for default skin in /usr/share/enigma2/
example most of my skins using nmsbd.ttf for main "Regular" font
<font filename="lcd.ttf" name="LCD" scale="100"/>
<font filename="nmsbd.ttf" name="Regular" scale="100"/>
<font filename="ae_AlMateen.ttf" name="Replacement" scale="100" replacement="1"/>
<font filename="tuxtxt.ttf" name="Console" scale="100"/>
<font filename="lsb.ttf" name="dung" scale="100"/>
</fonts>
skin fonts in /usr/share/fonts
Ok i have one font from my old friend Greg ruDREAM team for sure with support for Greek so you can experiment.
Replace Regular font in skin (look first for font name in skin coding) with font from Greg and replace LCD font with font from Greg
(backup first orginal fonts in image / rename Greg font and put in to /usr/share/fonts).
For info this font can be used in most of my skins
and has support for Greek and Russian
(For my skins rename greg font in to nmsbd.ttf and put in to (first backup orginal font)
/usr/share/fonts)
Restart