Hi Artin,
Usually, caching is the cause of such issues. Thus, clearing cache would be the solution. There are different forms of caching though such as browser, plugin, server side/hosting provider, CDN.
It’s advisable to clear these four first when encountering such issues. You seem to have server-side cache so yes, you would need to contact your hosting provider to clear cache from there side as well: https://share.getcloudapp.com/4gure6Jx
However, upon viewing your site, I can’t seem to replicate the issue anymore, so I’m assuming you were able to resolve this already.
Kindly let us know.