Given the UK government has a restriction on online e-commerce and marketplace. Your mobile service provider is most likely to have restricted your mobile data as "age-restriction" to protect children from accidental purchasing or fraud.
The solution is to log into your mobile data services provider and turn off the
For an example of Vodafone
Log into your account
Services and Extras
Bars and data alerts
Find "Age-restricted online content" and turn it off.
Note: other service providers will be differ from Vodafone, please check with your service provider.
