SuperPWA helps to convert your WordPress website into Progressive Web Apps instantly. PWA (Progressive Web Apps) demo at : https://superpwa.com and Plugin :
[x] Replace _e( with esc_html_e. Actually _e only Displays translated text but esc_html_e does safe escaping and keep all html tags outside from these functions
[x] discuss funciton 'superpwa_license_expire_warning' and 'superpwa_amp_manifest_json_relink' with @Sanjeevsetu