If your system has multiple versions of PHP, Atatus will be installed only in top level PHP version. If your application server is using different PHP version, then you have to install Atatus PHP agent in that version too. It can done by specifying ATATUS_PHP_PATH during installation.
Lets say, the PHP is in the location
/opt/plesk/php/7.3/bin
, then you have to passATATUS_PHP_PATH=/opt/plesk/php/7.3/bin
as followscopysudo ATATUS_PHP_PATH=/opt/plesk/php/7.3/bin ATATUS_LICENSE_KEY="APM_LIC_KEY" ATATUS_APP_NAME="YOUR_APP_NAME" bash install.sh