Text falls of the page

Hi,

This is linked to your template and how your shop is configured. It's impossible to say anything without directly looking at the problem.
Can you provide the URL of the page ?

Hi,

That block is the product custom fields table, and the overflow is a CSS layout issue: the table (and its inputs/help texts) is wider than the column it sits in, so instead of wrapping it spills past the right edge and gets cut off. It is not a HikaShop setting, so the fix is a small CSS rule. It keeps the text at its normal size and simply makes it wrap and fit the available width.

Add this to your template custom CSS (often a user.css file, or a "Custom CSS" field in the template options):

.hikashop_product_custom_info_main_table {
    width: 100%;
    table-layout: fixed;
}
.hikashop_product_custom_info_main_table td {
    overflow-wrap: break-word;
    word-break: break-word;
    white-space: normal;
}
.hikashop_product_custom_info_main_table td.key {
    width: 40%;
}
.hikashop_product_custom_info_main_table input,
.hikashop_product_custom_info_main_table select,
.hikashop_product_custom_info_main_table textarea {
    max-width: 100%;
    box-sizing: border-box;
}