If you are using “Hummingbird Page Speed Optimization” plugin, you may encounter some issues with UpStroke page when visiting the offer pages. This is due to aggressive page caching (which is a good thing!), but it can be easily resolved by excluding the offer page URI from cache plugin.
You need to exclude offer pages by following these instructions-
Step 1: Note down the slug of your offer page from here
Step 2: Open the settings of “Hummingbird” and click on Caching menu under it.
Step 3: Select the “Page Caching” tab.
Step 4: Locate for the option “Exclusions” below.
Step 5: To exclude “offer” pages enter your noted offer page slug (from step 1) as shown in screenshot: */offer/*
Step 6: Scoll down the page and click on “Save Settings” button to update the changes.
Note: By default, UpStroke pages slug is “offer”. If you had changed the offer pages slug for any reason get the slug from here UpStroke > Global Settings > Miscellaneous tab > Offer Post Type Slug