Hmmmm... It's now almost a month, since I raised the problem and nothing happened since then. I still cannot change my gallery and that's pretty annoying! It looks like RodS was right with his statement:

RodS posted at 5:49PM Sat, 09 April 2016 - #4248838

"... You repeatedly tell us how much you 'appreciate' every single one of us, and yet when these issues are brought to your attention, it's like talking into a vacuum. We get a canned response about passing it along to the programmers, or that it will be 'looked into' then silence.. And no change..."

Seems like it all is forgotten now and nothing will ever change. If they are really working on it, then it would be fine to get a status every now and then :-(