Have you read this topic from @GTT…
In my opinion, Raspberry Pi’s should only be used for Blynk servers, not clients.
They take too long to start-up, require an operating system to be loaded and updated, are hard on microSD cards, are fussy about power, are more expensive and most of all can’t run C++
You’d be far better with a Wemos D1 Mini/Pro, a NodeMCU or an ESP32.
Pete.