I sent a document to 3 different people, 2 signed from a desktop with no problems but the 3rd is having trouble signing from his phone. He is able to access the document, click on the required box and sign but the 'Apply' button does not pop up. The only option he has is 'Cancel'. What could be going on to cause this issue and how can we fix it? He is using the signature draw feature on an iPhone 6s. Thank you in advance.
... View more