I knew it was gonna be impossibly simple.  Thank you

Correct your site URL in the config settings.

Didn't see an "edit post" button but wanted to add that Editing Files by manually going to the albums and doing it that way works perfectly. The problem presents itself only with the uploading redirect.

I purchased a new domain and changed the path of my Coppermine Gallery to be "gallery" instead of cpg. Everything works fine except after I upload file(s) and I get the Edit Files redirect page. It uses the old path and domain. (I have attached a screenshot so you can see the error message that displays immediately after redirect.) I Googled my problem but didn't see relevant pages pop up in the results, so if this has been discussed before I probably used the wrong keywords.

I am new to this side of managing websites, but if someone could tell me how to correct this (and if there is anything else I need to be mindful of) in layman's terms, I would much appreciate it!

For reference, the old URL was cxhnow.supreme.fan and it has been changed to cxhnow.com

Starting getting error message "The previous file could not be placed" when batch uploading.

Trying to find a pattern, I tried a few things to get around it with some limited success.
- Tried deleting some previously uploaded pictures in an album that I had just uploaded.  After doing that, in some cases I could upload a picture that I previously could not.
- Tried deleting all the uploaded pictures in an album and starting again.  Got better results but eventually would get failures.
- When batch uploading, it can be loading along fine but once one picture gets that message then everything after that in the batch will fail with that message. 
- After getting that message, I tried uploading a picture that I once could upload to a random album it would fail.  In essence, once the message appears, you cannot upload anymore until you delete out pictures.

I am at http://royrossi.com/gallery/index.php
Version: Coppermine Photo Gallery 1.5.24 (stable)

Hoping this is something one of you has seen before.

Thank you for any time you have to get back. 
- Roy Rossi

HTML5 and Flash do not work.
When I uploaded the images in HTML5, it said 403.

Please provide a link to your gallery.

Web browser support for flash is rapidly going away. I don't know whether there is something with the flash uploader that could be changed to resolve whatever problem you are having but, at this point, it is doubtful that the dev team will be looking into it. The majority of the dev team had actually not wanted to even include flash upload with CPG 1.6. We're sorry you are having issues, but having to 'fall back' to the HTML5 uploader should certainly be an acceptable alternative.

I'm just uploading a simple one. This upload is only worked.

HTML5 and Flash do not work.
When I uploaded the images in HTML5, it said 403.

Fix your site URL in the config if it's not http://mirandakerr.fans.bz/gallery anymore. (https://mirandakerrfans.com/gallery ?)
That might help.

I have a problem with my gallery's latest thumbnails, they don't show and I don't know what to do.. When I upload new files they still don't show.
Could someone please help me?

My gallery : https://mirandakerrfans.com/gallery/

This plugin won't take the german language on any page.

Ctrl F5 did not cleared chache, but firefox restart did.