First, check whether the network on your phone is smooth, because sometimes if the network speed is slow, it may cause a delay in Taobao's response.

You may mistakenly think that the store cannot be followed, but in fact it is not just because the network speed is slow. If the network is smooth, you should consider other factors.

Because on Taobao, only the number of favorites is limited, there is no limit on how many stores we can follow