First off let me explain some things to you about the people that volunteer here on the forum. I like many others here have developed and support add on plugins and Dockers to the Unraid OS. We are NOT paid by LT. We do ask for contributions to help offset our time and efforts. That being said, I do appreciate that you are frustrated because your SMB mounts aren't working and I cannot provide instant gratification to solve your problem. In the future, try not to develop an attitude with any of us. You will not inspire anyone to help you that way. In fact you kind of pissed me off. Try to be patient and provide the information asked for so we can determine a solution. This is not a full time job for any of the volunteers and we have other commitments.
Now, let's go back to your original post and start there. The basic problem is that UD does not see the server as being on-line. Did this SMB share mount properly on an earlier version of Unraid and now with 6.6.5 it doesn't?
The lookup of the server and its shares is done through the master browser. That lookup was successful in your case. After that UD checks that the server is on-line and displays that status on the SMB icon and grays out the 'Mount' button if the server is not on-line. There is no reason to attempt a mount if the server is off-line - the mount would just fail. UD checks the server status using ping. I know you have been successful in pinging the server and manually mounting the share, but UDs logic is missing the server as being on-line.
I'm preparing one file with some additional logging so I can try to figure out where UD is missing the server status as being on-line. Once I get it ready, I'll ask you to install it and run some tests then post the diagnostics. I can't reproduce the problem so I'll have to depend on you to collect some data for me.