I just installed it on the device and it works great. No issues whatsoever. Thank you!
EDIT: Found some issues afterall:it doesn't automatically mark articles as read even though the option is active in Settings
special characters (like řšč...) are not shown in the article list (they're fine in article view, though)
the 'Show All' option is not remembered - the app always starts with the 'Show Unread' option
I have some suggestions as well, but those are not critical:app cover could be used to go through new articles, so you could check them without going into the app
the 'Settings' and 'About' options could be visible only in the folder view - it would make space in the article view for some more options
could you add options to show Special->New or Special->All on startup?
PS: I'm sorry I didn't give you any advice about the armv7hl target - I've got the target set up, but I remember I originally had issues with it as well and I can't recall the exact steps I had to take