Adobe Lightroom (not CC) cannot work

Hello everyone,

My previous school provides me with free adobe programmes, and I could use Adobe Lightroom. However, after two/three years, I could not access Lightroom due to the first message popping out in my computer. I did not purchase this lightroom as it was given by my school. Thus, i do not have any serial number for this.

May i check if i could use this without paying anything? This is an Adobe Lightroom not Adobe lightroom CC.

Please advise.

Thank you very much.

Miss X