Hello Marcus150,
I'm not sure I understood your 1st problem, but I tested the profile on my test site and I had no problem seeing it and no problem changing page when I'm on the profile page. So I cannot reproduce your problem at home.
This could be a problem with your joomla configuration or a conflict with your template.
Could you provide your site url so that we can possibly see it and better understand your problem.
For your second problem, I also tried on my test site and I saw no problem with remote admin.
The remote admin command is running correctly, I get the simulator version, and I see the command running correctly in the region console.
Are you really 1000% sure you have configured your files correctly, can you check this carefully, please.
Make sure, for example, that the "admin_get_opensim_version" command is authorized in your configuration.
(see: enabled_methods = admin_broadcast | admin_create_region | admin_get_opensim_version)
Remote admin must be enabled in jOpenSim and must also be configured correctly in OpenSim.ini
If you can provide any other useful information to target your problem it may help.
For example log files, console error messages, etc ...