I have my site in 3.9.9 wplms. Currently I don't want to upgrade to 4.x version. When the latest version will be stable , then I will upgrade.
Id there would be a problem If I upgrade later?
We are working 24 hours fixing the bugs and issues.
We are also adding support for our premium addons for 4.0 .
From our side the update is stable now but still dont know where and how the issues might be appearing and are reported by the users .
Would recommend go through :
https://wplms.io/support/knowledge-base/wplms-4-0-faqs/
and check table here for addons :
https://wplms.io/support/knowledge-base/wplms-v4-0/