Cannot post Bogo until I disable BOGO

Hello

We have an issue when trying to make a new post, the error message appears and cannot post them.

Below screenshot is what we try to do.

After clicking above, below error occurs.
「編集しようとした項目はありません。削除されたのかもしれません。」
Which means, “The item you were trying to edit was not found. It may have been deleted.”.

This is strange since we’re not editing it but trying to make a new post.

This may be the similar issue with “Cannot edit page until I disable BOGO“.
But by disabling the other plugins, the issue persists.

After reloading the page for some time, it proceeds normally.

This happens on everyone of our members, and it won’t be resolved by deleting the cache or using other browsers, devices.

When the WordPress support tried to reproduce this, strangely this didn’t happen at all, so might be something of the language or the location issue?

Strangely, this issue won’t be happening on my iphone, but only on the computer.

Is there anything we can do to resolve this or investigate on this?

Best Regards,