2 problems possibly related

I am having 2 problems with Postie. They both started occurring a week or so ago. I may be running into some limit but I have no idea where.
1) A short message will be processed some time and sometimes not. When I run the Process Email manually everything works fine. I just can’t get the plugin to run consistently without manual intervention. Have looked at several late forums but none seem to help including the one regarding the wp_cron file.
2) A long message, I’m talking 3+ paragraphs of text, will not process. When I do a Process Email manually it just hangs. It will generate a tmptitle — Draft in the post area. It also has a different Author than other posts.

https://ww.wp.xz.cn/plugins/postie/