Site Manager

Using Dreamweaver 2019. My site manager stop working asking me whenever I click on Live to upload my files to my host, I now get a error stating I need to add a remote server in site manager. I have my site manager listed. Been working without issues for the longest time, now out of nowhere it won't upload or test. I've went so far to uninstall dreamweaver and reinstall and recreate site manager and it still won't work but keeps asking me to click the + sign to add a remote site when it's already in there. I've scanned for virus's and malware - nothing, clean. Don't know what to do. Any help to get this working again would be appreciated. Also, another issue is that which happened simultanelously, I was putting together a page and just before/prior to this happening my page wouldnt read my css files which it was working, that stopped at the same time the site manager stopped. Help please. Thank you