I am seeing a lot of posts with people having issues with updates.
EVERY release of Oxwall people have been on frantically looking help with down sites and need urgent assistance to get them back up and running.
Good site management is when you have minimal downtime which means you have a clone of your site and you test and check any changes or updates there BEFORE applying it to your livesite.
And ALWAYS backup before doing any work. If anything goes wrong you can quickly restore your site with minimal loss or disruption.
That way when problems arise you dont have a dead site, you dont lose members and instead of the developers answering messages all of a similar topic they can concentrate on a possible fix.
And remember, the software is free, so is the support.