Contents on post get underlined automatically after publishing

I noticed after I publish posts, they get underlined automatically. I didn’t underline my posts in the Editor but they all get underlined automatically after publishing, and in the preview, they don’t appear underlined. It’s only after I publish them public.

Please how do I clear this underlining on my posts? Because they look weird and make reading difficult for my readers and viewers.

• This topic was modified 2 years, 9 months ago by classy18.

The page I need help with: [log in to see the link]