VLC is an excellent tool for testing and viewing your SRT output streams.
Setting up OBS for SRT Broadcast
Open VLC player and click FILE option at the top. Then Select OPEN NETWORK...
A window will appear to set up playing from a Network Source.
Make sure the Network tab is selected, enter the full SRT URL found in your Program Output settings and click OPEN.
Note: Usually RePro input ports start with a 1 e.g. srt://lon1.repro.stream:10095
and output ports start with a 2 e.g. srt://lon1.repro.stream:20095
Make sure you use the right port in the url - make sure you are using the output url for viewing and the input url for broadcasting into RePro.
You should now be viewing your RePro Program's SRT Output.