Hi @Reni99!
I suspect the mod. I don’t know how long you’ve been using the kit, but since it has a built-in battery, after a while it no longer provides the vaping experience as it did when new. The battery capacity decreases, and thus the vaping experience as well.
Also, it’s not normal that it shows the resistance value erratically.
As a first step, I would suggest trying another mod with the existing tanks.
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