Installing Crisp on Prestashop is really easy!
- Get the Crisp Plugin file here https://github.com/crisp-im/crisp-plugin-prestashop/archive/master.zip
- Unzip it and copy it as "crisp" in the Prestashop module folder
- Login on the Prestashop panel
- Go to "modules and services" > "Front Office Features" > Crisp
- Install It and Configure It
- Get your Website ID from your Crisp Panel. In your website settings, or in Plugins / Wordpress / Website ID