Site seems to be completely broken after changing site url

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I was trying to use a reviews plugin. The plugin told me I needed to change my url in the general settings.

It said: Please make sure your shop is correctly set up in the 2 fields “WordPress Address (URL)” and “Site Address (URL)” in the General Settings: [shopdomain.com]/wp-admin/options-general.php

I ended up changing this and immediately my site all went down. I went into php my admin and changed the values back to their originals but now no images or plugins seem to work on my site.

I am very sad and upset I have been working on this and learning for over a month now and everything seems ruined.

Is there any way I can fix it?

Thanks

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

 

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