ognam

Hi, thanks for the replay.

I’ve tried option 1 before, which results in the user being redirected to the thank you page normally, but the submission is not written to the database and the letter is not sent. Do you have any other suggestions if I enable Ajax Submit option?

further, I don’t use any caching or optimizing plugin, should I adjust it in my server? I use blue host sever.

This exception usually occurs on mobile phones, when the user first goes to the submission page. When I did a refresh, the exception went away.