Hello @bhas,

Most of the times these odd behaviors when using Klaviyo are either caused by an authentication issue or cache/cookie related. 

In situations like this, I always recommend taking the following steps:

1. Fully signing out of your account
2. Fully clearing the cache and cookies in your browser
3. Close out of the browser
4. Launch a new browser and try signing in again

Additionally, it may be a good idea to double check you don’t have any overly active extensions or ad blockers that may be preventing the full functionality of Klaviyo.

I hope this helps!

David

Thanks for this detailed answer. In my case, the Custom Reports were not loading because I opened Klaviyo in Brave, which has ad blockers. 

Opening it in Chrome fixed the problem