I have the same issue. I’ve searched every corner of the Internet that I can think of to try to find a solution. I use Custom Contact Forms on several websites. The first site had issues with sending emails about 6 months ago. I have had two more develop the same issue since.
I have tried toggling and all of the other suggestions with no help.
Has anyone had any luck getting this fixed? I have several blogs using this functionality and it quit working on all of them. I have tried everything I can think of to fix it with no success.
