i understand the situation but former authors of virtual sailor add-ons do not expect for them to remain available for years after they are released. we are already lucky as is that the amount of virtual sailor add-ons that are available still actually are.
this doesn't mean that the remaining ones are not susceptible to being removed or lost permanently, as is the case with these particular add-ons that belong to Venjs; in fact they were never released which is why there never were any download links. and posting the .zip file directly to this forum can't be done, as the forum can not host .zip files itself and instead must be hosted on file sharing sites for which the author only has control over the file, and not the entire site.
it is not their fault that the websites they used to host their add-ons have vanished. examples of this include gamefront which no longer exists where Kyle originally hosted his add-ons, and fileswap which also ceases to exist where Sam (Nemo) used to host his add-ons also. thankfully people can make mirror links like me.
so try visiting this Facebook group which features add-ons exclusive to it, and you also may be able to find more information about exactly which add-ons you are looking for with the help of the members present there since you said you were at your wits' end because of this situation: https://www.facebook.com/groups/virtualsailorgroup/