Greetings! Bungie is aware of this issue, mentioned [url=https://help.bungie.net/hc/en-us/articles/4416375175444-Destiny-2-Year-5-Known-Issues-and-Vital-Information]here[/url]. If you can reset your artifact on another character, the triumph might progress as intended afterward. Otherwise, you'll have to wait until the next patch, which is planned to release on Tuesday, April 19th where you'll be able to reset the artifact when you own all 25 artifact mods ([url=https://www.bungie.net/en/Explore/Detail/News/51241]Source[/url]). [quote]The Synaptic Fanatic Triumph may not unlock for some characters after unlocking 25 Artifact mods. [/quote] Stay tuned to the [url=https://twitter.com/BungieHelp]@BungieHelp Twitter Page[/url] and the [url=https://www.bungie.net/en/News]TWAB[/url] for future updates!