Website form problem in pinterest app. Need to debug!

I am having a strange issue with my website's web form on the pinterest mobile app only. For some reason, in the Pinterest app itself, my website's forms aren't functioning correctly. It takes multiple clicks (finger taps), sometimes 10 or more, to click into a field before you can enter information. This is happening on every field. There is a long delay, sometimes 10 seconds and 10 clicks or more, to open up the form calendar to choose the date for that field. There is also a long delay to open the drop-down selection menu for another field inside the form as well. The whole thing is very buggy and takes multiple clicks and delays to enter any field. Clicking the "continue" button on the first page of the form and the "submit" button on the 2nd page of the form are the same way. This is only an issue within the pinterest mobile app. In other mobile apps like Facbook and Instagram, my form works perfectly with no delays or click problems. It also works fine on the Pinterest website, just not through the pinterest app. It works perfectly on any mobile browser like Chrome, Firefox, etc. Can you fix this issue? It may be hard to figure out since this problem is very specific to the pinterest mobile app and nothing else. The same problem occurs, although not quite as badly, in the comment form on other pages of my website. That is just the regular wordpress comment form and I don't know why there is such a delay to be able to enter information within a form field. I have verified the problem is on multiple android phones and I suspect that it is the same for Iphones, but I don't have an Iphone to test that. I can tell that pinterest users are having the same problem because sometimes they submit the lead 4+ times, meaning they are clicking the submit button rapidly because of the problem. It is drastically lowering my lead conversion rate on pinterest and I need it fixed. Thank you! Requirements: You must have an android phone with the pinterest app installed to be able to see the issue. If you have an iphone, you must verify that the problem is occuring on that device before hiring. Please don't bid on this job unless you are very confident you can find and fix this issue. I will not pay for a job that is not completed successfully.