What characters .coupons extension supports?
It is possible to register the letters a to z, á, é, í, ó, ú, ñ, à, è, ù, â, ê, î, ô, û, ç, ë, ï, ü, ä, ö, ß, the numbers 0 to 9, Arabic letters ا to ء, Hebrew characters, Russian characters a to я, Chinese characters, Greek characters α to Ω, Hindi characters, Japanese letters, Korean alphabet, Tamil characters such as க் and ற், Thai script and “-“.