In that case you should start talking to the guys at Blynk.io as you’ll need to sign-up to a commercial licence to do that. As you’re struggling with your development they will help with this and get your project to a point where it’s doing what you want.
The ESP core will have a version number in the 2.x.x or 3.x.x range. Check by going to boards manager in the Arduino IDE and scrolling down to the bottom of the list. 2.4.2 is the version that I’d Reccomemd, anything in the 3.x.x range is too buggy to use.
Any sensor located near your board will read incorrectly because f the heat generated by the board…
The BME280 is a great sensor and very easy to use. I’d recommend it over any of the DHT sensors.
Pete.