Livestream to Restream keeps dropping 1.5 hours into streaming

I have been using OBS to push to YT and FB for the last 2 years. About 2 months ago, our streams have been dropping around 1.5 hours into the stream. Our Sunday services are 2 hours long and it has been dropping off. Restream says that it is seeing a timeout error so it is like OBS is dropping the signal. Has something changed with OBS settings that I need to adjust to keep the stream going for a long period of time?
 
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