Hello,
I am sorry about the issue.
Could you please provide me with a copy of the project, so that I can check whether the slowdown is independent of the hosting space used for the website?
You can export it in Step 5 - Export, choosing the “Export the project” option to generate an IWZIP file.
You can then upload the file with SwissTransfer, TransferNow or similar services, and provide a download link to support @ incomedia.eu (without the spaces).
Thank you.

I've sent an email. Thanks for your help.

Hello,
I exported the website on my hosting space, and although there is a brief delay, the prices are displayed almost instantly after confirming on the pop-up:
https://eric-c.websitex5.me/progetti/www.bktec.net/store.php
I would recommend contacting your hosting provider to examine the situation.
I remain available.