There is a cart bug on my cart. There only one item shown in cart. But when i enter cart page or check out page this item dissappear or when i add another product to cart this item dissappear again. Cloud you please check it fastly.
Please deactivate all the plugins not related to the theme and switch the parent theme, check the issue, if the problem remains, leave the plugins not activated we shall check. Perhaps we shall require to switch to the default theme for checking. Please confirm.
Usually, we deactivate all for 15-20 minutes max. Perhaps you can clone and export your site to some staging platform, where we can check and as soon as we understand the reason to fix it on the live site without deactivating all.