To get your bug fixed faster please try to answer the following questions:
Which browser, operating system and versions of those are you using?
Firefox, MacOS 10.15
Which version of Memex are you running?
What are the steps you took that lead to the bug?
Everytime that I click on a memex link redirecting to worldbrain.io, I get an error 525 in my browser. it seems that something is wrong with that domain (url) so I cannot download the back up app, neither look at the tutorials, … your help/suggestions are highly appreciated.