If a campaign runs for let's say only a week, after that week member are going to remove their signatures immediately leading to no exposure.
However one thing i do not like about this campaign as the payment was shifted from bitcoin to Trx.
The reason given seems to be related to participants not providing TRX addresses because the campaign manager has decided to redirect payments from Bitcoin addresses to TRX addresses.
The worst part is that, some participants had been marked paid and some are still left with no payment even after submitting TRX address, some are still yet to submit their address don't know if the manager has notified the them do repaste new address. This is the worst unprofessional campaign manager so far in the forum, he is joking with his reputation and I wonder how he could be able to manage campaign properly next time.