To ensure all items are being sent from SureDone to Google, you must first go to Settings > Storefront and make sure you have the following fields at least mapped in your Google Shopping section:
Title
Price
Description
There are some additional fields that can be mapped but if an item is missing any of the above fields it will not be processed. To look for items that are missing a title, description or price, you can input (title:= price:= longdescription:=) in that exact format in your Product Search:
Then you can export those items and fill in those fields that have no values. If these steps do not help, Google offers steps to troubleshoot your feed as well and see if any errors are returned. The following Google link goes into detail on how that can be done: https://support.google.com/merchants/answer/188476?hl=en