Hello,
I enhanced the posting above.
Just go with normal XLS export (NOT legacy), I would suggest. We are using it extensively, incl. Arabic texts.
For real numeric variables in form design, unfortunately exported as text by KoBo, we use Excel conversion “Text to columns” (Data menu), selecting the column. (Partly also for date values.). Simple format change seems not enough, will only change cell alignment.
There is also a KoBo enhancement request:
Kind regards