SIM900A problem connecting to Blynk

I’m using Sim900A with ESP8266 and I’m trying to connect it to Blynk cloud. I’m using newest librarys and TinyGSM doesn’t work. Sim900 is working with AT commands, I can send and receive data but don’t know how to connect it to Blynk cloud other than using TinyGSM library. With this library I’m getting error SIM is missing