Price in GBP although currency selected is USD

Hello There.

A few clients from the US reported that when the site loads for the first time, the currency selected is USD (as it should be) but the actual price is the one in GBP and not yet converted in USD unless they do a full page refresh, at that point then a full price conversion happens and the correct USD amount is shown.

Could you help me understand why this is happening please? I’ll a link to the site https://reve-en-vert.com/ in case you need to do some testing.

Looking forward to hearing from you back.

Thanks for the help.