I’m not an expert but. I succeeded in connecting by using the token directly in blynk.begin. Note: not my actual token.
Blynk.begin("22e81c4ja71f5kdis2918dc93t9d9211", IPAddress(45,55,130,102), 8442);
Also using the debug feature for blynk helps to see what’s going on.
#define BLYNK_PRINT Serial // Defines the object that is used for printing
#define BLYNK_DEBUG // Optional, this enables more detailed prints
Insert as the very first lines in your code.