Publish takes a long time, ghosted button

I’m having a blogging problem I can’t seem to resolve.

Twice a week I have posts that are longer than the rest of the week. The posts are lists of coupons with image and link for each one. When I get it all ready to post, I go to click on the green publish button and it just sits there as if I haven’t clicked on anything so this won’t post. I have gotten them to post a few times if I let it just sit there for an hour or two but the past few days it won’t do it even then.

While it sits there I can open another wp-admin browser window and work in a new post and even if it’s short, it won’t post while the long one is still open in another window. The short one will accept the click on the green publish button, but will give me a white page and an error message that says no data. Something about the server sending no data.

If I close the window with the long unpublished post and wait quite a while the short one will post ok. Often times after publishing a post it will give me the 500 error code but every time I check my blog it’s posted so I’ve gotten used to disregarding the 500 notice because that tells me my post went through.

I’m self -taught so I’m still pretty green. I’m running the up to date version of WordPress, and the theme is Mantra. My active theme is my Mantra Child theme I put together after getting tired of my customizations in Mantra being lost when the theme upgraded. I taught myself how to do the child theme. The problem was still happening before I added the child theme anyway though.

I had been having trouble with my blog loading way way too slowly so I disabled all my plug-ins and activated them one by one and found the culprit to be Jetpack,so Jetpack is still among my installed plugins but I have it deactivated.

My blog is CalvaryCouponers.com

Any assistance is very much appreciated! Thank you in advance 🙂

Helen

P.s. i posted this to a different website and someone responded who told me to check for errors on the backside and said to go to my blog and right click and inspect. I did it and there were 2 errors. I responded to him and he responded back that he saw 32 errors and I should pay showings to fix all my errors! I can’t afford that yet!! 🙁