Why does this code keep displaying and how can I fix it?

Store Design
1

May I know, Why this code keep Displaying? How to remove it?

MercyGrace_0-1627529602556.png
MercyGrace_0-1627529602556.png1885×841 183 KB

also when I click the Item and choose a variant it doesn’t change when I add it to Cart. Only the variant who displayed was only the variant you can pick.

MercyGrace_1-1627529760979.png
MercyGrace_1-1627529760979.png1800×819 171 KB

MercyGrace_2-1627529806089.png
MercyGrace_2-1627529806089.png1388×623 47.3 KB

Can you help me? Where Settings I should Change?

2

I suggest you change the theme