I have used the link and sent a message before posting, but got no answer!!
You didn't answer the question about reading that page - all is explained.
You can send from web dashboard at getalby.com/wallet, when you connect your node.
Customer service is at https://support.getalby.com and basically everywhere you can meet us.
Discussion
Where did you send a message, sir? If you checked the link you would know why your zaps do not work (you don't have a node, and we are not sharing ours anymore)