mobile image upload error

Hi,

I’ve noticed that there is an error when trying to upload certain photos via contact form 7 on mobile, when the same photos are uploaded without any problems on desktop version.
When tested submitting only text via mobile contact form 7 there was no problem, it only occurred when adding an image (and only certain ones like the ones taken via iphone for example) and pressing the submit button – the circle arrows just loop infinitely and the submission does not send to the email.
I have added all possible image formats and increased the allowed image size to the contact form 7 settings but it made no difference.
Here is the submission form link:
https://spillwords.com/u-submit-spillwordspress-u-blog/
I’m not sure how to fix the issue, so any help would be appreciated.

thank you