there are a few important things to improve it:
1- city and country is very difficult to choose and it didn't find my location so it will be better to choose the location from (Google map) or (coordinates) like other extensions.
2- reminder alarm or countdown times on or before the athan time
3- the ability to click on praying time (fajr, dhuhor, aser...) to see the remaining time.
there are a major things for any prayer extension.
thank you for this add-on and hope it gets better

Update:
thank you for very quick response, may god reward you (jzak allah khair)
Now it's the best prayer extension that I used (accurate, staple and a lot of customization)
one more thing if you don't mind, could you integrated the prayer schedual for the whole month or year (like calendar)