Gallery is not displayed correctly

Hello,

I need some help with a problem for Shutter Reloaded Plus.
I made a gallery and set the pictures to be displayed 5 on row but as you can see at https://www.stefanrusie.ro/escapada-la-munte/ they are 3 on a row and the others are on the second row.

The same problems occurs when I set 3 pictures on a row; it displays only 2 and the third one appears on the second row.

Please help me with this issue.

Thank you very much!

https://www.ads-software.com/plugins/shutter-reloaded-plus/