Form configuration change

hi there, i'm owner of a website developed using Grav CMS. i added some contactus forms, using forms plugin, as ex https://www.francescanerosaz.org/italia/peraccogliere/perfettaletiziaassisi
now my domain provider sent me the communications that is changing the code of form script provided fron them. https://guide.hosting.aruba.it/hosting/linux/faq/suggerimenti-di-configurazione.aspx#a_1620804696155 (italian language)
and i looked into the code where needed to make a change, but i cannot find...could someone please help me?
or if no action is required for me?
if request is not clear or other informations are needed, please ask me, i can explain more details...
thank you