Solved Preview not working, a 404 Not Found error

Hi and thanks for all!

I checked your suggestions, only with preview option because if send topic, hosting banned my ip for 1 hour.

@sozzled, your changes didn't do anything.
@rich, you can use good non logged but if I am logged in (super user, registered and moderator) and put attached text have the problem.
@Mortti, I did that you said and it have same problem, now I am banned, I emailed hosting to inform.

Thanks for your support.

Now I have a lot of problems with invalid token.
I feel that I have to start from the beginning.

bymamo wrote: Now I have a lot of problems with invalid token.
I feel that I have to start from the beginning.

If you would like honest professional assistance in setting up Kunena on your website—fast answers for all your questions—you know where to contact me.

Well, I installed J! plus kunena...
We do categories and few topics...
I writte problematic text line by line and all go fine less text writing (no copy paste):

e p h e d r a ---- d i s t a c h y a

Could be that this plant would be banned automatic because is a non food plant?

Thanks

Yes, this may well be. It can happen when a security tool on the Server blocked certain character combinations.

Yes, that's the problem: "E p h e d r a"

Thanks all for your support.