This is a customer complaint.
While a minor issue, the fact that Zoho does not allow users to upload both a standard landscape-oriented logo and a square/portrait oriented icon logo annoys me. Because in Zoho, you have various places where you display the logo landscaped or as a portrait square.
When I upload a 240x240 logo icon this is what I see:
The logo mark is all distorted, despite the fact I uploaded the correct image size!