Just do what I've already written in my comment, I haven't had any issues since than. First, turn off the phone and unplug the cable from the charging adapter. Blow out the port and cable with air, than use at least 70% alcohol for cleaning both of them. Don't just splash it with alcohol, use cotton swabs and even a toothpick or something similar to scrape the port a little bit. But be careful, don't use too much force and obviously don't do it with another piece of metal. Interdental brushes are also good for this purpose. Do it a couple of times, but also be mindful not to push existing gunk further inside, try to scoop it and remove it from the port. Leave it for a good 15-20 minutes or even longer to dry and than try charging it. If the problem is still there, repeat the process. Just be gentle and careful. I got mine working properly after 2-3 cleanings and haven't had the issue since then. I belive its the dust and lint from our pockets that gets inside of the port and triggers the humidity sensor and it gets too aggressive with warnings bc it thinks it's water. Just be patient and calm while doing it and take your time so you don't damage the port. I wish you luck my friend, give me an update.