Go to settings and adjust the Server URL as per the below image

Enter the name of your Ona account after http://ona.io/ E.g. http://ona.io/robertbanick

Now enter your username and password

Go to Get Blank Form to download your completed forms from the OMK Form Server.

We need to download the map background file that goes along with the server. Plug your android phone into a computer with the map file.

Put the .mbtiles file under the openmapkit/mbtiles folder. Now when you boot up OpenMapKit the map should load when your GPS locates you in the map's area.

This option selects the actual OSM data (not the map) that you'll be editing

This option selects the OSM background map you'll be using. Note that it defaults to the Online Humanitarian style unless you specify otherwise. This is useful when you have a strong data connection but won't work when you don't.

You can click on any feature on your map to edit it.

Click on Send Finalized Form(s) to get to the upload dialogue.

Select all the forms you want or click Toggle All. When you're read click Send Selected to upload your completed data to the server.

Not possible in new Ona version

Data will download as a collection of .osm files that you will need to manually merge.

In older versions of JOSM you can merge all the .osm files together with the merge command

In newer versions you will need to merge these files one-by-one