Greetings! After checking your profile, it appears you [url=https://www.bungie.net/en/PGCR/10606651931?character=2305843009266828837]cleared[/url] the Birthplace of the Vile Grandmaster while it was not progressing the Total Conquest triumph correctly (this was [url=https://www.bungie.net/en/Explore/Detail/News/51270]fixed[/url] on April 26, 2022, your clear was completed on April 14th, 2022). This is [i]likely[/i] the cause for your 5/6 progress on this triumph. Unfortunately, this means you'll have to clear Birthplace of the Vile again for this triumph to progress as intended; this fix was not retroactive.