Cloudflare free ssl + play framework - why doesn't it give the page completely?

Question

Scala

Good afternoon!
There is a site poeinfo.ru, where you can see information on one game. Information is being updated. Accordingly, there is a sample.
But at the same time - if we request a sufficiently large selection (select all items in the desired one, leaving the "how we pay" field empty and indicate the online status - off) - then we will get an answer something like 50-400 answers.
Now (at the time of writing the message) you can simply select the status online - and click search - there will be no ending of the file in any case. And I don't understand what's wrong. On the local machine - no problem.
On poe.uip.su - no problems either. And on poeinfo.ru - there are problems.
Empirically established - most likely a jamb in cloudflare and its traffic proxying + forced use of httpS.
Question - is it possible to somehow cloudflare with my site? Or is it better to refuse such free certificates and switch to http ? Unfortunately, I won’t pull my certificate now (
For those who are too lazy to choose all the items:
http://poe.uip.su/?league=Prophecy&want=1%2C2%2... - everything is fine here
http://poeinfo.ru /?league=Prophecy&want=1%2C2%2... - there's a bug here

Answer 1

Hmm ... I wrote the question for a long time and, to be honest, I forgot about it.
I'll give the answer myself. Version 2.5.0 was used, to solve the problem you need to upgrade to 2.5.1
No advice on dancing with nginx gave anything.
At the same time, such jambs were not observed locally, but it was worth running the product on the server even in dev mode - as they appeared. I don't understand why it is so.
As I could figure it out - there were some jambs with Akka, sort of, in 2.5.1 they were fixed.