Reply To: You have invalid or expired license key Home › Forums › Front End PM PRO › You have invalid or expired license key › Reply To: You have invalid or expired license key February 9, 2018 at 10:37 pm #10904 Shamim HasanKeymaster Is it possible to update php version? at least 5.6? Can you please deactivate all other plugins except only this one and change theme to default theme and try?