Hello,

There are definitely defined disconnect times for idle time.

If you have an open Zoom meeting  you may have run into a problem where the meeting automatically terminates after 40 minutes of inactivity. This is normal behavior, there is no way to override the behavior.

If you have a Zoom meeting open, but no one has joined the meeting, the meeting will stay open for 24 hours. If someone has joined the meeting and then left, the meeting will terminate after 40 minutes of no activity. The meeting will end 40 minutes later if no one else joins.  As long as there are others in the session, you will not have the issue. 

Read this and see if it helps you; 

Understanding time limits for Zoom Meetings

https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0067966 

Meeting time limits on Zoom vary based on the type of account:

1. **Basic (Free) Users**: Meetings are limited to 40 minutes. This applies to all types of meetings, including 1:1, group meetings, and Personal Meeting Rooms. If a Basic user needs more than 40 minutes, they can either restart the meeting or upgrade to a Pro account.

2. **Licensed Users**: Meetings can last up to 30 hours. However, if a Licensed user joins a meeting hosted by a Basic user, the 40-minute limit applies.

3. **Meeting Types**: Instant meetings and no-fixed-time recurring meetings do not have a scheduled duration, so they are not subject to the Time Remaining timer.

4. **Idle Time**: Meetings may end automatically based on idle time, account type, and the number of participants.

Understanding these limits helps in planning meetings effectively to avoid interruptions.

Are you certain that your  pro licence was applied to your account?

https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0057835

Regards

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