Higher wattage chargers do not provide more power than the device being charged draws. Try reversing the USB-C connector, with some devices I have found that the reversible connector is in fact not always reversible.
I have an Anker charger with two ports which use different tech to detect what the device needs : an USB A with Anker's poweriq (which supports multiple fast charging standards like qualcomm QC, but it also charges devices that don't use fast charging), and an USB C port that only does USB PD.
My vape only charges on the USB A port with poweriq. The strictly USB PD port doesn't work for it (but works on all my other devices).
I've decided in the future I will only buy chargers from Anker that have their proprietary poweriq thing, and dismiss anything that only supports USB PD. Poweriq 3 also works with USB PD devices so having a charger or a port that only does USB PD seems useless.