Guys, can someone help me?

Why does this easy code not working on ropsen test network. And works on js vm only?


// SPDX-License-Identifier: MIT
pragma solidity ^0.7.6;

contract Counter {
uint public count;

// Function to get the current count
function get() public view returns (uint) {
return count;
}

// Function to increment count by 1
function inc() public {
count += 1;
}

// Function to decrement count by 1
function dec() public {
count -= 1;
}
}