My website is making cache on Mozilla every time I use

Hello community,
I have a website on WordPress which is for the purpose of a service. I always Mozilla to open the cPanel and dashboard of website. But few days ago, I have started to face issues in its cache. I talk with my hosting support, but they let me know to talk with browser support too. My website is which is for special service-based website. Please check it out and let me know what the reason behind this issue is. Either it is Mozilla browser or the hosting?

Thanks in advance!