My printer (EPSON WF-3720) is not responding when I try to print. Why?

I have been attempting all morning to print from LibreOffice a spreadsheet but my printer just sits and gives no response. My sheet is originally Excel and I opened it in Libre format, if that has anything to do with it. Yes, I highlighted the print area. What do I need to do?

does printing work from another software?

After opening it in LO Calc, try saving it with another name, close it and then open it (new file name) and see if it will print.