The monastery can be hard to find. To get to it, go back to the road running to the west of Seitur, and follow it south until you reach a path that forks off on the left. Follow that path as it takes you north along the coast - with the actual monastery being some way to the north of Seitur, despite your initial direction!
Return to Manus and let him know you've passed on the Pledge.
Wait two days and then return to Manus for your reward.
The following Journal ID and Index codes can be used with the Journalconsole command to manually update the quest to a certain point.
Worthy Investment (TR_m3_Se_Invest)
Index
Finishes Quest
Journal Entry
10
Manus, the trader at the small village of Seitur, wants me to try and convince the local innkeepers to direct some of their business his way.
20
I spoke to Ryamon Sevenas, proprietor of the Hunted Hound Inn, who refused to offer any support to Manus due to his status as an outlander.
30
Tilme Sevenas, wife of the proprietor of the Hunted Hound Inn, suggested that if Manus wished to convince her husband of his worth, he should make some kind of contribution to the local Sinramen Monastery.
40
Manus gave me a pledge of donation to deliver to the Sinramen Monastery in his name.
50
Rathos Reminul of the Sinramen Monastery accepted Manus' pledged offering, and extended his thanks.
60
Manus thanked me for delivering his pledge to the Monastery, and told me to return when he had collected enough funds to compensate me for my trouble.
65
I should investigate whether Manus' donation to the Monastery was able to convince Ryamon Sevenas to support him.
70
Finishes quest
It seems Manus' investment has paid off, and the Hunted Hound has been sending some business his way. Manus gave me a reward for my help.