Can't enter URL Mappings--the input field won't allow me to type in it. Any ideas?

So, I created a new site on 7.1, I've successfully connected my domain. When I type in my url, it still goes to my old page, but if I hit the refresh button in the browser, it refreshes to my new site and displays just fine. [see video] I've tried opening in a private browsing window. I've opened in multiple browsers (Safari and Firefox). I've cleared my cache via Developer panel in Safari. I've visited on a mobile browser. I get the exact same behavior in all instances.  UPDATE: I've been able to force the new page to load by making the old site private. 

Also, I'm trying to enter 301 redirects in the URL mappings page for outdated pages that were not rebuilt on the new site. When I click in Settings>Developer Tools, the carat is there indicating additional options, but the options won't expand and the page won't load. So, I went to the help articles, followed the direct link in the article which took me directly to the URL mappings page--but I can't click/type in the text box. What gives?? 

So, I was able to force the loading of my new site by taking my old site and making it private. 

But I still can't enter URL mappings. 

The issue might be custom code. To check please see the following.

Let us know how it goes.

@creedonI think maybe you put this reply in the wrong thread?? My issue is in the Squarespace backend--I can't expand items in the Squarespace settings page, and when I direct link to the URL Mappings page, I can't type in the box where you input the 301/302 code.  

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I think maybe you put this reply in the wrong thread?? My issue is in the Squarespace backend

My reply is for this thread. Custom code can interfere with the editor. By following my suggestion we can potentially ( and is easily done ) eliminate the custom code as being the issue.

The method for the diagnostic I provide is the same regardless of the issue causing it. Get the custom code turned off, test the issue, if the issue doesn't go away we have narrowed down the potential causes. If it does go away then you know where to attack to issue.

@creedon gotcha, thanks for clarifying.

I added /safe to the end of my editing URL and successfully disabled scripts. Nothing changed.

I have gone in and removed each separate script in the Code Injection one at a time, saved, tested--nothing has changed. 

I've also discovered that in the Settings panel in the editor, I can't expand ANY menu items. So, I can't expand billing, I can't expand Developer Tools, Language and Region, etc. 

Next. Make sure your browser is up to date. What browser do you use and what is it's version?

@creedon Safari--latest update, plus I've tried in Chrome and Firefox. Was one of the first things I tried. 

Finally got ahold of Squarespace thru live chat. We had to work it back to router issues, but finally got it resolved! Thanks for the help @creedon.

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We had to work it back to router issues

Router wouldn't be at the top of my list but it's certainly on the list! 🙂

Did you just have to restart it? Or, did you need a firmware update?

Just had to restart it, and I cleared all the caches on all of my browsers (again), and it finally worked. Weird.