Both my iphone8 and ipad have had the blank home page since the 6/14 update. I reported it 6/17 but the more reports/complaints they get the better, maybe they'll even fix it
Ipad, I have it working by turning it sideways after opening the app, the home page appears, then turn it back. I tried many other things to no avail, might want to check that security software isn't interfering.
My iphone still doesn't work, temporarily using husband's old android to submit offers. Doesn't help me checking offers when shopping with my phone though so I have to plan ahead.