To change positions, first go to the address (or drag your pin) on the main map, then hit edit location, you should see the new position in the location form, and then you can save it.
The maps have very weird coverage in Israel. I tried putting an address in Tel Aviv (largest city in Israel), but it doesn't recognize any of the streets.
Some streets in a few other cities in Israel are recognized.
Also, can you please allow to write a free-form expression for the currency exchange? I'd like to exchange BTC for the local currency ILS, and it's not one of the top currencies listed (I did write it in the description, but the title still shows USD)