Create ssl from cloudflare and enter keys in the corresponding field
Add the SSL code and private code you created in cloudflare to the ssl section of the website
To add the ssl code, click on the relevant address in the website section of the aapanel.
Press the SSL button on the left https://prnt.sc/11468vc
Add and save codes here https://prnt.sc/11465ll
Then the let's encrypt screen will come and select all and accept from there. https://prnt.sc/1146agq
/If your old code fails, you should create a new ssl and try with the new code.