The MISP2Sentinel solution makes use of the "ThreatIntelligenceIndicator" table which is no longer populated by Microsoft Sentinel. Microsoft recommends and actively uses the "ThreatIntelIndicators" table instead.
This solution only provides the Sentinel-side of Cudeso's solution and is 2 year old. It should be updated to match the current STIX-based format that both https://github.com/cudeso/misp2sentinel and Microosft recommend.
@cudeso please see above, :)