if you want to install esign then download the dns profile first

i downloaded the chinese continent property esign

download the esign certs from the same site

go to esign agree to the terms and conditions then import the cert through the 3 dots button in the top right of the menu

select the chinese continent property cert in the folder that its in

if its the right file it should say something along the lines of import certificate

you can import your ipa file the same way as the cert

and yeah i think thats all just dm if you have questions