Juggluco with Librelinkup

I am looking to use Juggluco with LibreLinkUp to take advantage of the calibration settings. My current readings are consistently 10–30 points lower than my finger-stick results. This is causing frequent false low alerts at night and occasionally during the day. I am currently wearing a second CGM alongside my finger-prick testing for comparison.

what is good resource to how to guild? I find the app confusing to use
what are the step make sure it get uploaded to LibrelinkUP
Guild how to connect the sensor and steps to follow