Coils burning out within 2 days!

Hi all. I have the Nautilus 2S tank. All the coils I've tried for this tank burn out and I get the awful burnt taste within 2 days. The last coil lasted less than a day. I am not a heavy user by any means but I'm lost for words.

I have the Eleaf Ipower as my battery.

What could be causing this? Is it a faulty tank? I've bought the coils from several sources and all produced the similar result.

Thank you.
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