Resilio Sync doesn’t available

Hello everyone!

I’m using NETGEAR ReadyNAS 1020 with Resilio Sync App. Yesterday I tried to download some files on one of authorized computers, that for a long time has not been used for a such tasks. The app on the laptop said me, that there were no peers, so the file couldn’t be downloaded (for information: all laptops are synced to the NAS, not to each other. So, the files are transferring through the NAS, that is always online, and internet was also on). Then the Resilio App on the laptop offered to install the last version - so did I. But nothing has been changed. The App didn’t see any peer. I checked it additionally from the app in my phone - everything worked normally. So, I opened the ReadyNAS admin-page, and it offered me to update the firmware (6.9.4 Hotfix 1) - so did I too. And again nothing changed. Phone stoped work normally. There were no any peer in the phone-app too. I returned to the admin-page, and saw that there was a new version of Resilio Sync for NAS ready for update. I clicked “download”. Then ReadyNAS “thought” for a long time, but nothing did exactly. After that I saw in logs, that Resilio Sync App was not installed, and the message, that it couldn’t be done. I tried to find this app in ReadyNAS app-store, but there were not any app with tag “Resilio” or “Sync”. There was not any app from that soft-producer.
Everything worked for a several years without problem. And now I have not comfortable access to my folders. I want to install it. How can I do it? WTF? Help me please, who knows something. Thanks.