castordor

Ok sorry I misreaded, if it says it can’t connect then it’s probably not permissions.

Is your webhost allow you to connect with FTPS (SSL)? if yes then use these info it should work.

It is maybe a permissions related problem, have you set folders and files permissions correctly?

https://codex.www.ads-software.com/Changing_File_Permissions

it should ask you for your ftp info

when you are trying to update is it ask you for the ftp info?

Have you allowed the ip adress and the port in your firewall?

you need a theme for 3.5.1 or reinstall from 3.4.2 (not recommended)

you need domain admin to edit the dns

ns1.wordpress.com is an exemple, don’t use it. You have to use ns1 and ns2 from your webhost. Contact them and ask for your nameservers.

Good

yes, 644 for the files, but the folders need 755 on a cgi/fastcgi environment.

normally in hostname you should write: localhost

to empty the queue I guest you should clear your temp/cache folder

The easiest way to do this is to use winscp client and open your wordpress directory (probably /home/yourusername/pblic_html).

Select all folders and files, then do a right click and select properties.

Type 0644 in Octal field and check addX to directories box.

Check also Set group, owner and permissions recursively.

Click ok

It should take about an half hour to finish, then try again.

If you get a message (cannot write to…) then give a 0777 permission to this folder and only this folder for security reason. Mostly for cache or images directories.

Before installing wordpress you should check with your hosting provider if they meets the minimum server requirements: https://www.ads-software.com/about/requirements/

If yes, then the most of the time these kind of errors are files permissions related : https://codex.www.ads-software.com/Changing_File_Permissions

hope this help

I tried it and it seems fast for now, that is probably because you are on a shared hosting and someone on this server is using all the ressources sometimes.

Try it: https://gtmetrix.com/