According to Icelandic news it seems that Almannavaranir (Iceland Civil Authority) have cancelled the uncertainty level for Grímsfjall volcano. But the uncertainty level was put in place following the glacier flood from Grímsvötn glacier lake.
The announcement from Iceland Civil Authority in Icelandic. Please use Google Translate.
Óvissustigi aflýst vegna Grímsvatna (Icelandic)
Icelandic News. Please use Google translate.
Óvissustigi aflýst vegna Grímsvatna (Vísir.is)