Thank you for your reply.
My saved login credentials for your site work perfectly, as always.
My concern is about my credentials for the site pling dot com, which seems to have some sort of relationship or association with opendesktop.org although you are separate entities as you have explained.
Since you have indicated to me that there is no real cause for concern if I am unable to log into plingdotcom, then I shall let the matter rest unless and until a problem actually exists.
I consider this matter to be closed for now. Thank you for your able assistance once again.
My respect and best regards,