It looks like you are able to present the volume by selecting "All Other Initiators" option which is nothing but default mapping. So volume is accessible through default mapping.
We would like to understand how you are doing explicit mapping, where things going wrong so that we can try to help you. If possible just present a single volume to a single host through explicit mapping and capture those screenshots for our understanding.
Hope this helps!
Regards
Subhajit
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