Hi @SandervG, thank you so much for the warm welcome and feedback. We have only tried printing with Tough PLA and Ultimaker ABS so far. I do not think it is an issue with the filament since I tried printing with the same filament using other printers, and they came out fine. We don't think the issue is with the hot end either since we swapped to a new hot end and the outcome is still the same. I also believe the flow sensor is enabled - I haven't received an ER43 error code that was saying otherwise.
So far, the printer has outputted error ER52, ER61, and ER63. It came to a point where the printer kept giving an error and asking to reboot on startup. I manually removed the filament by turning the printer off, cutting the filament at the insertion point, and gently pulling it forward/out through the Bowden tube (ER61 - Material Station failed to unload material – Ultimaker Support). We have since been using extruder 2 to continue printing operation – it seems that the problem is isolated to just extruder 1 and its subsystems.
I will try taking Carla's advice by printing on extruder 1 without the material station. However, if the issue is in regards to the material station, do you have any advice on how to go about troubleshooting it?