CreateUserWizard Problem

Your host provider does not realise what a Web Farm or a Cluster is, and I'm surprised.  They run a web farm and have many clusters if any of their customers have more than one domain.

A Web Farm is similar, but all of the webhosts they provide are the Web Farm they run.

Whether they use a Linux Server or a Windows Server, they most certainly do use Web Farms and Clusters.

I'm curious as to what host provider that would be.  I would venture a guess that most of the hosting they do is in the form of virtual hosts, that is, they apply some directives to Apache, or set up virtual hosts under Internet Information Server [IIS] and direct their nameservers to identify each by domainname, but, they are most likely all on the same server machine, or, at most, a handful for server machines.  If they have more than one server themselves that provide hosting, again, they run their own Web Farm and Cluster.

This is one of the problems with some hosting services.

It still boils down to what the error report told you, bad keys.  What it also says is that your user's machine private key does not match your host provider's public key; it may match the one on the computer you built it on and therefore it works there, but the key for your host provider machine does not have the proper key pair, i.e., public key for their machine while your application has the private key for the machine you built it on.  So it can't do the handshake for a trusted site and algorithim the proper encoding and decoding, either for simple logon or for full communications.

Read: https://sourceforge.net/docs/F02/en/#top
and  : https://sourceforge.net/docs/F02/en/#key_posting

it is similar to how you would have to post the proper keys [certificate] to the machine you want your application to run on and answer with either the host provider's key or perhaps your own generated by the key generation program running from your hosted site.

The passphrase is used in the encryption/decryption algorithim, which also must match your host providers capabilities, and you must either do this or write your application with your host provider's key [certificate].

The compiler you used has told you that AutoGenerate cannot be used in a cluster, meaning that your application cannot generate they key for a hosting provider [it's not allowed, they have their keys/certificates and that's it], so perhaps you overlooked something in your code to provide for this.

You have a somewhat sticky problem because you didn't compile it on the host provider's machine, but on your own, the keys and certificates are not portable from your machine to their machine.  That's all.