Kamoer fx-stp dosing pump not dosing

I have been running my Kalk set up with no issues for months, only issue is connectingto the wifi. I recently had a seem break and had to upgrade my tank and the pump has been off line the last 2-3 weeks while everything settles. I thought it was a clogged line so i cleaned it out running it through the pump, but it was dosing with bubbles so i changed the lines and also replaced the pump tubing. Im still having bubbles in the line and when calibrating it just stops dosing 20 seconds into the calibration.i