Switching browser usually means that you don't have any extensions installed, no caching, no local storage, probably no malware and so on. They suggest you to

Switching browser usually means that you don't have any extensions installed, no caching, no local storage, probably no malware and so on. They suggest you to _try_ another browser and see if that's fixed. If is fixed, there is a problem on your side. If is not, there might be a problem on their side. --- TLDR: that looks like a standard/automated reply