Venutius

This is a plugin aimed at BP users that do not use a theme specifically built for BP, for those that have the basic list provided by BP and want to make this look a lot more professional. It’s also aimed at those of you who know how to use CSS to turn this into a grid but find the results disappointing in that this technique fails to provide a uniform grid due to the squares being of inconsistent length.
What’s required is some nifty JavaScript that makes sure the grid squares are uniform that works with either Legacy or Nouveau themes – That’s where BP Directory Views comes in.
This is a pretty simple plugin that extends the work done by Hugo – hnla with his Style Modules work. This original code has been extended so that it resizes the grid tiles to uniform length every time the directory view changes.

BP Directory Views

Creates a uniform grid view for the Groups and Members directory pages.

itthinx

This plugin redirects 404’s caused by hits on pages that are protected by <a href="https://wordpress.org/plugins/groups/" rel="ugc">Groups</a>.
The redirection settings can be adjusted in Settings > Groups 404 :
Visits to protected pages can be redirected to:
<ul>
<li>a specific post, or</li>
<li>the WordPress login</li>
</ul>
The redirection can also be applied for restricted categories, tags and other taxonomy terms if <a href="https://www.itthinx.com/shop/groups-restrict-categories/" rel="nofollow ugc">Groups Restrict Categories</a> is used.
The redirect status code can be selected among:
<ul>
<li>Moved Permanently (301)</li>
<li>Found (302)</li>
<li>See other (303)</li>
<li>Temporary Redirect (307)</li>
</ul>

Groups 404 Redirect

I know this plugin hasn't been updated in a couple years, but IMHO Groups and its related plugins (like this one) are a hidden gem for WordPress sites. So many people jump to complicated membership plugins when they could do everything they need with Groups. This 404 redirect add-on works like a charm. I'm using it on the latest version of WP 5.x

Perfect.

Redirect 404's when a visitor tries to access a page protected by Groups.

BP Directory Views vs Groups 404 Redirect