Is it permissible to personally renew the marriage contract a few months after its completion online?

Marriage via the Internet is valid if its pillars are met: a guardian, two witnesses, offer, and acceptance. It is valid, all the more so, given that what is valid over the phone is also valid. If the first contract was valid and complete in its pillars, then its renewal is considered a confirmation of it, and the rulings of marriage take effect from the first contract. Therefore, it is not permissible to impose new conditions or a new dowry. However, if the first contract was incomplete in its pillars, it is considered void, and a new contract must be concluded with a new dowry and new conditions.