UiPath StudioX - not able to modify resources (add, remove)

I was working on the script written already some time ago. I wanted to modify the resource as I need to use a file located in different path.
I was able to remove / add new resource, and then I entered it again to change on more thing and the option to add and remove resources dissapeared. I have only the list to display but cannot do nothing with it.
How can I fix it?

Hi

Try restarting UiPath studioX and check once @agnieszka.baginska

Thank you Palaniyappan, I already tried it and with no effect unfortunately :frowning: