Hi,

By adding this https://gyazo.com/ff3adf9d17f6be5291f0250d2658bcb1 custom code you disabled all align options for text-element paragraphs. Now there is no other way other than using !important rule every time.

Try to add this HTML in builder text element

<p style="text-align: center !important;">Nessuno in casa? Scegli un <strong><a href="https://www.ups.com/dropoff?loc=it_IT" target="_blank" rel="noopener noreferrer">UPS Access Point</a></strong>e comunicacelo tra le note nella pagina di checkout.</p>

Regards