Grove-base-hat does`t work

Hi there! I have problems with my Grove-base-hat for Raspberry Pi3B. Couple days ago i was working with heart rate sensor and suddenly raspberry stop physically find grove base. I tried to fix it. I reconnect base hat and reboot sistem and turn on/off i2c interface but it does`t help at all. What can it be the problem?
This is my grove base: https://wiki.seeedstudio.com/Grove_Base_Hat_for_Raspberry_Pi/