It has only been a few days since Dogemate was released, but dogeapi.com has made a slight change to their API that broke the USD price checker. Yesterday I submitted version 1.1.0 for an expedited review so hopefully it will be available soon. The new version adds both currency conversion and two new Bitcoin exchange options.
Just hold tight, a fix is on the way!
UPDATE: The app just went into review yesterday, but unfortunately it has received the dreaded “app requires additional time for review.” So in the meantime the bitcoin prices are still working.
UPDATE 2: The app is still in review, but dogeapi has reverted the API so USD prices should be working in the app store again!