Hi, ZHUO SIKAI 

Thanks for reaching out to us

Can you please send me a link to this page, and I can isolate the issue for you?

It is possible if you maybe activated Google translate and it is conflicting in some way, or it could be a conflict with something else, that is overriding Amelia's default CSS styles,

but I don't wanna guess too much before investigating the page.

Hi, ZHUO SIKAI

Sorry for taking so much time working on this.

Seems I isolated the issue. I believe it is most probably the active WP theme or another active plugin that is adding a bit of custom CSS and overriding Amelia's. It is placing a fixed width of pixels to the span holding the time slot.

Can you please add this custom CSS to all the pages that you have booking forms on, and let's see if it resolves it?

.amelia-app-booking #amelia-booking-wrap #am-step-booking .am-select-date .am-appointment-times .el-radio-button .el-radio-button__inner, .amelia-app-booking #amelia-booking-wrap .am-step-booking-catalog .am-select-date .am-appointment-times .el-radio-button .el-radio-button__inner {
   
    width: 100%;
}

Custom code needs to be applied to the page where the booking form is. Depending on what you're using (Gutenberg blocks, or some page builder), adding the CSS or JS can be done in a few different ways. 

If you need help with adding custom CSS to the page, please take a look at this article.

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On the page you sent, it is looking much better for me when I apply the CSS in the browser:

Let me know how it goes.

If after doing this, it is still the same on your end, we can take a look from your WP Admin dashboard.

If you wish that, you can  provide me a temporary WP-admin (administrator) user for your site where this happens, so we could log in and take a look ‘from the inside’ as that’s the most efficient way to see and resolve the issue. 

We do not interfere with any data or anything else except for the plugin (in case that’s a production version of the site), and of course, we do not provide login data to third parties. 

You can write credentials here just check PRIVATE Reply so nobody can see them except us.