XnView Software

I am new user of XnViewMP ( iMAC, macOS Sierra 10.12.6), I have installed version OSX DMG and at the beginning everything seems to be ok. Now I have mainly problems:
- no FOLDERS
-no Favorites
-no CATEGORIES
My screen shot :


There is a problem with my mouse also- it is impossible to check precisely for example 5 photos, it scroll so quickly !!
Where is my mistake ? What should I do ?
Is the version DMG correct What is the difference with TGZ version of your software ?

Thank you in advance for your patience and help.
ET

do you have checked View>Data pane>Show?

No Pierre.
Finally I have decided to put XnView MP to trash, because it does not work properly on my coomp.
Thank you for your help.

ET55 wrote:Finally I have decided to put XnView MP to trash, because it does not work properly on my coomp.

I can help you for the problem

Thanks a lot Pierre.
I decided to use Adobe Bridge- seems to be better, quicker, more user friendly.