Thanks for your reply and apologies for responding this late.
I've read into the template manager and installed the Starter content (twice on accident).
However, this did not activate or add presets from other stacks.
We were trying to change the appearance of the accordion element. I'm sure we can work around it with CSS but the little icon is a different story I think. For example we would like to have the "+" instead of the chevron.
I hope I'm not asking to much and I'll include the login details in a secure note so you could take a look. Everything is up to date and cache has been cleared.
We just solved this issue ourself mostly. Thanks to this post we found out about the ability to modify everything custom without the use of presets. The confusion was probably due to the fact that we were used to old methods and that these modifying options are a little hidden.
I wish we came across that post earlier on but it's solved now, thanks for your support.