I've been trying to figure out what is going wrong with my survey. I went out the other day to field test it, but I haven't been able to upload the results from my mobile device (android phone, my coworker with an iphone is having the same problem) back to arcgis online. I've been getting the error 400, invalid url message. I've looked around and tried a few of the fixes mentioned (delete photos, allow http as well as https, check for long integer problems, and I tried adding a portal url too) but nothing has worked. I've attached the excel file for my survey. Any help would be greatly appreciated!
(Update: I created another survey and copy-pasted the excel pages from the first survey into it. I typed a bunch of gibberish into it and took some pictures, everything uploaded fine, then I tried taking new data with the original survey in the same way and am still having errors... What could be causing this? I would still like to keep the data I collected from the first survey...)