Yeah I wish I had a solution for you but I don't. I work at a vape shop and those have been shitting the bed left and right. The wismec predator has been a POS too. Really disappointed with both smok and wismec on these mods, I really liked my alien and really wanted to like the predator. Smok probably wont do anything for you either.
Hate to say it but you're probably going to have to buy a new mod. My favorite lately has been the VooPoo Drag, seems really solid and has a lot of nice features very similar to DNA mods. It might not be your style though and the alien seemed really good for the first few months too. The Drag hasn't been out very long but is been very well received.
It's really hard to know what is going to last these days, the alien was everyone's favorite mod and sold like hotcakes for the first few months. Now nobody will touch them and there's nothing we can do for the people who's mods are dying. Firmware update, no firmware update, firmware updated right or wrong they all seem to be going out in one way or another.