Run services every 5 min:help

i add the cron at /etc/cron.d/librenms
but when im going to check the services added in webinterface, i found they not checked for 10 days ,
my question, how i can update the date in interface ,
sorrly, the first time im using librenms, and i don’t put the differencee also with alert rule and when i put the check for service via add services.
thank for replying

Show what you put in the cron as it’s included by default.