CLARIFICATION ABOUT LICENSES AND SUBSCRIPTIONS

[ArchMP]

Hello everyone, users and moderators,
I write this post to seek clarifications regarding permanent licenses and subscriptions.
Until 2019 there were the perpetual licenses of the standalone version (studio) and the licenses (always perpetual) of the various plugins related to modeling software.
(right? correct me if I'm wrong, please)
Now there is the Enterprise version and the subscriptions that have the peculiarity of giving access to all the plugins in a single payment solution, with a monthly or annual subscription, but this is no longer a perpetual license.

Now I would like to understand ....:

1) Do perpetual licenses purchased previously continue to work despite upgrading to 2020 versions?
or is it better not to update and create a new account in order to use the new versions?
I read on the otoy forum that at the end of the subscription subscription period you can still return to using the old licenses already in our possession, up to 4.05.
2) why on my account in the SUBSCRIPTION section it says Paid up to (UTC) 2020-03-03 despite I have never updated beyond v4?
3) in the download section it is possible to download all the versions, regardless of whether a subscription contract has been stipulated or not, but the only versions that can be used having the old perpetual ones are at most up to 4.05?
4) I have 2 STANDALONE licenses and 2 3dsma plugins and 2 sketchup plugins, I would like to know if I can continue to use version 4.x with the help of a render node slave on the network using the second license.
Thank you all.

[paride4331]

Hi ArchMP,
please contact the Otoy helpdesk.
Regards
Paride

[ArchMP]

How?
I wrote Here https://help.otoy.com/hc/en-us/requests/new but it seems to redirect to forum

[paride4331]

Hi ArchMP,
yes, that's it.
Regards
Paride

[ArchMP]

Hi Paride,
Sorry, but I have written several times to the support, but I have not received a reply.
considering that I'm not the only one to have these doubts, I think it's a fair idea to reply here;
the forum is useful for this, isn't it?
Regards