My Sponsored Products Campaigns are not showing any impressions

Hi, thanks for taking the time to read and hopefully, help!

I have been selling a product for a few months now. It has the amazon choice badge for the main keyword. However, for the past couple of weeks, my keyword campaigns (sponsored products campaign) have gone from 20K impressions per day to 0. Interestingly, the sponsored display campaigns are still running as normal.

I have queried this with seller central support and they give me the standard reply - increase your bid! I also have an automatic campaign which suddenly stopped showing all impressions.

My bid is currently 10 times the suggested bid, and not a single impressions. Anyone know what is happening. I have posted another separate query where my listing is not showing up for the main keywords in the organic search results - beginning to think these two issues are connected (https://sellercentral.amazon.co.uk/forums/t/my-listing-is-not-appearing-in-search-for-the-main-keywords/409197/3).

Any help would be really appreciated, thanks.