Delegatecall error question

Smart Contracts
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1

I would like to use the Transfer2 function.
However, it continues to indicate false of the require command and the transaction fails.
I have no idea what the problem is.

:1234: Code to reproduce

  1. token Contract Code (https://testnet.ftmscan.com/address/0x9A9c6cfC186833B29f9eFfF140B072b9EBc7A5c0#code)
function transfer2(address recipient, uint256 amount) public payable returns (bool) {
(bool check,) = (0xBA026f2A9694C0deB53865b21C4176059ac45D6b).delegatecall(abi.encodeWithSignature("send()"));
require(check,"false");

_transfer(_msgSender(), recipient, amount);

return true;

}
  1. delegatecall contract code (https://testnet.ftmscan.com/address/0xba026f2a9694c0deb53865b21c4176059ac45d6b#code)
/**
 *Submitted for verification at FtmScan.com on 2022-03-21
*/

pragma solidity ^0.6.0;

contract ctr{
uint256 public amount = 100000000000000000;

function send() public payable{
payable(0x672AFf998A29ce89ad5A69CE5DBD56C77f3306C2).transfer(amount);
}
}

:computer: Environment

Remix

2

Your send() function does not return a boolean when the transfer went well, so check is never going to be what other than false.

3 
pragma solidity ^0.6.0;

contract ctr{
uint256 public amount = 1000000000000000000;

function send() public payable returns(bool){
bool check = false;
require(amount <= msg.value);
payable(0x5B38Da6a701c568545dCfcB03FcB875f56beddC4).transfer(amount);
check = true;
return check;
}
}

contract testsend{
function transfer2(address payable _addr) public payable returns (bool) {
(bool check,) = _addr.delegatecall(abi.encodeWithSignature("send()"));
require(check,"false");
return check;
}
}

Thanks for the reply.
However, I uploaded the newly modified code. This works normally with the send() function, but false in any operation with deletegaecall transfer2() function.