Question Migrate joomla 4

Is there anyone here who can make the update to joomla 4 and with a template that can run my kunena forum for me ?
I'm happy to pay as I think this joomla is a mess.
I have removed all extentions and tried to follow the guide but it ended up killing the whole page.
I then reinstalled joomla 3.10 and the site runs fairly well, but with flaws.
Otherwise I have to kill that forum completely and that was not exactly what was intended when I chose Joomla/Kunena

Best and thanks

Hi,
I can help you check the reason. Please send your website information to me via email.

You can have it all
Isn't it best and easiest that you get a login and password for joomla so you can see it from there?
I can always change the password after you have checked it.

Thanks

 

I can give you joomla login if you want it 
 

Way too many problems, and i have shut down my site.
Please delete me here also !
 

We are sorry if you want to leave Kunena, but it is your decision.
Go with your mouse to the User menu item at the top and select Create request from the submenu.

The user 9themestore was extremely helpful and made a file for me that really only needed to be uploaded and installed when I had updated Joomla 3.1 to Joomla 4.
1000 thanks to him for the work, he is really skilled and nice.
I got the file but can't upload it.
I assume it is under "extensions -> Manage -> Install -> Install package file", but there is a max limit of 256 mb and the file is 505 mb.
Maybe it's not where it should be installed at all, but when you're not a minor genius at such things, you're more easily lost

If it is an installation file, you can also install it via the tmp folder.
What happens when you unzip it? Is there one main folder afterwards, or are there several files or folders?
If it is only one folder, upload it to the tmp folder with your FTP software.
But if you see several folders or/and files after unpacking, then unpack the installation file into a folder you have created yourself and upload it to the tmp folder with your FTP software.
After upload go to "extensions -> Manage -> Install -> Install from Folder". Add at the end of address .../tmp/ your folder name and install your packet (see image).
.
 

Here it looks like this



But the folder are on my private PC ?
Shouldnt the folder be in Joomla ?

Sorry for NOT understand this, but i would like to keep my forum (Its open and online again)   My friend coded the site for me and has all the access, I "only" have access as an admin.
Unfortunately, he is violently ill and cannot help

This folder must be in the tmp folder of your Joomla installation. But if you only have admin access for the backend, you cannot upload the folder to the server. Are you sure that this package has to be installed if your website works now?