If you are using the "LiteSpeed" plugin, you may encounter some issues with the Checkout page when visiting it.
This is due to aggressive page caching (which is a good thing!), but it can be easily resolved by excluding the checkout page URL from the cache plugin.
You need to exclude checkout pages by following these instructions:
Step 1: Note down the slug of your checkout page from the general settings
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Step 2: Open the settings of "LiteSpeed Cache"
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Step 3: Jump on the “Exclude” tab.
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Step 4: Scroll down the exclude page and locate for "Do Not Cache URIs"
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Step 5: To exclude “checkouts” pages, enter your noted checkout page slug (from step 1) with special characters as shown in the screenshot: “/checkouts/”
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Step 6: Scroll down the page and click on the "Save Changes" button to update the settings.
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By default, the Checkout page's slug is "checkouts". If you had changed the checkout pages slug for any reason get the slug from FunnelKit (formerly WooFunnels) > Settings > General > Permalinks.