> 1
I will only use faucet extension based on multi activation in the future.
So this is no longer a problem.
> 2
The faucet ‘ip problem’ seems to be resolved.
First, I am sorry that I did not try enough and asked a question.
Perhaps the problem seems to be the problem between WordPress&Server and CloudFlare configuration.
(I had w3tc disabled to use the cache in the cloudflare.)
*My case solution*
I reinstalled w3tc and reconfigured all settings(w3tc, wordpress) the same as before.
I also applied the cloudflare extension of w3tc.
The faucet was normalized with the same environment as the existing one.