I bought an open box enail (High Tech Titanium Honey Highve) from a local shop for a sweet deal, no paperwork or warranty or anything. It worked fine for a couple months but now is acting funny. We had a few power surges a couple weeks ago and ever since the enail struggles to hold temperature. It constantly fluctuates about 50 degrees whereas it used to hold within just a couple. Also, every so often at varying intervals the "current temperature" reading numbers all switch to flashing blocks and the coil quits heating. It resets and starts heating again after a minute or so. I was wondering if anyone owns this brand has had similar issues or if anyone familiar with electronics has any insight on what the issue may be and what to do to fix it. https://hightechtitanium.com/high-tech-titanium-honey-highve.html