Hi every body
I have problems and i would like to know how to fix it the follow problems:
Last background job execution ran 18 days ago. Something seems wrong. Check the background job settings 
.
Your web server is not properly set up to resolve “/.well-known/webfinger”. Further information can be found in the documentation .
Please use the support template… We can’t help you without.
Furthermore, click on the links (especially the second one) and read the documentation there.
I dont know , where can i change it.
Cron gets automatically set, if you have setup a cron job on your machine… If you can’t use it, you could use a webcron service that will call your cron.php. I thinkt that there might be some free services for this. If that’s also no option for you, you have to use AJAX.
At least, if you had fill up the support form, we would know what is your system, i could provide command lines to check whether or not cron is installed, or setup.
But as you did not…
