Pete, you do not say how old your Eriba is. The soft sealant oozing out is perfectly normal. and nothing to worry about. My last van was a 2017 Triton and when I sold it earlier this summer the sealant around the awning rail was still oozing out. On my van prior to this, a 2006 Famila, I was still occasionally cleaning up the ooze up until I sold it in 2016.
The best way to tidy the area up is NOT to pull at the sealant. Dampen a cloth with white spirit and wipe the areas. Use an old credit card to cut through the oozing mastic. Roll up the mastic which will now look like a very dark ball of snot. Wipe the area with dampened rag and repeat as needed. When you are happy with the clean up give the area a polish with a good car wax, eg Autoglym, Mer, Turtlewax etc.
Colin