No need. One shopback account can use with whatever merchants/accounts.

I've got 4-5 missing cashbacks with my main lazada account (same email address). On the other hand so far all cashbacks ok using dupe Lazada accounts.

I believe missing cashbacks has nothing to do with accounts. In my case most my undetected cashbacks were from Lazada app. Already more than a month, status still 'investigating'. Huhu

It is a generic email sent to everyone (I also got the email).

I think they will only pay the pending cashback and capped at maximum RM75.

I'm using Mi4. After latest MIUI updates the GPS problem has been fixed so no problem already. But it does not support 4G in Malaysia. A year ago I thought I could live with 3G, apparently I am wrong. I think 4G is really needed nowadays now especially when signal is not good.

I think RN3 or Mi Max is a good alternative. Or consider the imported RN4, although not sure if its Mediatek will be as good as RN3 SD variant.

Otherwise if need lower budget, Redmi 3 is quite ok (just bought one for my mom). At least its 4G and dual/bybrid sim+external SD are added advantage compared to Mi4.