You could try a higher bed temp, but also check to make sure bed is levelled all round as this can sometimes cause this to happen
If you have already used alcohol to eliminate grease and fingerprints, sometimes scrubbing the print surface with a regular green scotchbrite pad can restore adhesion. It micro-scratches the surface and seriously increases the surface area of contact.
This all assumes you have properly calibrated the bed, reduced first layer print speed by at least 50%, increased first layer print thickness By >= 50%...
Things you need to check or do: