Summary of imperfections/omissions/bugs in GUI/language (Android).
 

Version 1.9. build 150:
The "title" of "Display mode" is now shown translated. OK

Re "Subtitles": on the "Choose text size and color" pop-up
the small print "Text size xx" at left just above the slidebar
is still shown as "2131165478 xx" (in any language). not OK!

According to the XML-language file the confirmation text intended to be shown following a
(1) "Clear cache" is ....... "Deleted x file(s) from cache"
(2) "Clean database" is .. "Deleted x items from database".
In reality (and in any language) the same text ("Deleted x file(s) from cache") is shown following both actions.

Missing translations (not in XML file):

Build

On the pop-up "Add SMB Server" (Following a tap on "Add server")
Server/IP name:
Username:
Password:

"Error connecting to share"
(which I stumbled upon when my PC (with the share) was switched off).

"LAN connection is not available" (Edit: added 05 March)
(in Library when my Android TV-stick had lost its WiFi connection with my network).

(and maybe also: File/fps/Video/(HW acc)/(SW)../Audio/ch/FPS/avg of info OSD).

Reported by samho: "Invalid host name"