I have checked in but I am unable to access multiplier rewards option. It keeps showing the check in tab instead.
Can't access multiplier rewards option, plz help
Same. Also happened yesterday
I hope webnovel forum admin can respond
Same here after app update
Same here 
It should be replaced by a login system where a big reward is given after a natural week of consecutive logins
Same hereeee
Same here, any updates?
Same here
- Edited
CKtalon Hang about, is this "big reward" the '15SS+50 EXP' bonus that's mentioned when you click on the large present icon on the check-in window?
Ignoring the fact that SS daily rewards were already reduced a fortnight ago, the avg. weekly multiplier total up 'til then was ~50+SS. Now that was a "big reward" and, from my perspective, generously made up for the reduction in SS versus the beginning of the year. Whilst still nice, in comparison 15SS a week isn't a "big reward", not relatively speaking!
It'd be nice to not have to trawl through the forum to find out what's going on, or at least have a detailed 'change notes' list somewhere on here detailing behavioural changes, SS rewards changes included.
Edit:- Today I've managed to successfully obtain the daily multiplier reward, so now I have no idea what I'm supposed to be expecting considering it didn't work for me yesterday, along with others having the same issue?! Are there still daily multipliers on top of the 7-day consecutive reward? Is the daily multiplier reward only available on select days?
This problem seems to be related to local time. Try changing time on your device to USA time zone (works for me)