One of the most essential reasons dab vape pens clog is the interaction between temperatures, both internal and external, and the oil. In warm conditions, oil within a cartridge is subject to becoming runny. Alternatively, cold temperatures thicken oil or wax within a cartridge.
How to fix the dab pen clogging?
Please try to choose a dab vape pen comes with the preheat function, like Ooze Fusion.
And please use a lower temp when you start vaping.