How long does Ico last?

So, my friend is participating in the subscription campaign in the OUTOFTHLOUD project. https://bitcointalk.org/index.php?topic=4814891.0
then something has changed and now https://bitcointalk.org/index.php?topic=5085373
The rewards program began on August 1 and continues to this day. It has been 8 long months. Posts in social networks stopped at the end of 2018. For all Telegram questions, when the program ends for a fee, my friend gets one answer - after Ico. When asked when Ico will end - silence.
It’s a pity to throw a signature, it turns out 8 months of work wasted ...

Tell me, is there a limit on the duration of Ico? It can not last forever?