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I have a confusing issue, I delivered the logo to the client with the standard sizes for social media applications (link to the page I took sizes from https://globalspex.com/logo-dimensions/ ), but he came back and told me that FB size which is 200px*200px looks blurry. I tried it myself and it looked blurry too. Now my question is: are those sizes in this link(In other links too all over the internet) wrong, or there is something that I don't understand?. And if they are correct then why the logo looks blurry? (it looks blurry on all social media sizes). should I only deliver 5000px*5000px version instead of these sizes? (because I tried it and it's very good on all social media apps).