Php version change dont'recognize ( exec and shell_exec error)

hello, I have installed matomo and everything works correctly.
i tried to import data from GA but it tells me exec and shell_exec are not active.
I removed them from the list of disabled applications via whm and set php 7.4.
if I do the diagnostics it still tells me that I am at 7.3 with the functions disabled.
i put matomo on a subdomain how can i solve?
thank you all