My Google Ads Budget Is Not Being Spent. What Should I Do?

Firstly, check that everything in your ad account is set up from a technical point of view. Check for any 'misconfigured' messages in any of your campaigns.

Then leverage the Simprosys support team behind your 'Google Shopping Feed App' and explain that your budget is not being spent and ask them to check everything from their side.

In the meantime, I would create more Google Search Text ads based on the data you have been able to gather so far.

Signing new, high quality suppliers will make a big impact. If there are no technical issues, it may just be the demand for the suppliers and products that you have live. With new suppliers on your site, your Google Ads account will have more assets to use and will be able to tap into more demand for the products in your niche.