Newbie: I've no idea on how to program the blynk app works together with Arduino IDE language

[Blynk_Coeur]

@booniiie

i would try to convert

you need to test examples and understand how blynk works before trying to install your sketch.
please have a look at the very good examples from my teatcher, @Gunner
you will find all you need

C++ Blynk (Legacy) - Code Examples for Basic Tasks

Hello Blynk Users. I know many hate to actually READ … but please at least read through this initial post before commenting… Thank you Index to date: 1 - Basic ESP8266 & ESP32 based Blynk with OTA template 2 - Using zeRGBa and Slider Widgets to control virtual and physical RGB LED 3 - Dirt simple Zero Centered Negative/Positive data display 4 - Slow & Variable Servo Sweep Without ‘delay()’ (Yay Timers!) 5 - Matrix of Randomly Flashing & Coloured V…