MAX7000AE device not supported in Quartus II?

This usually means the part is going to be obsolete soon and it is not in the drop down list so new designs do not target it, but I would check with your sales rep or FAE to make sure on that. Or look for Product discontinuance notice on altera.com. For your quartus question try this ...

Target a different 7128AE device for your project or design file, save the project. Open the .QSF file and change the device selection line to match your 7128AELC84. It should look like this after. Save file, try to compile. check report if it chose that part.

set_global_assignment -name DEVICE "EPM7128AELC84-10"