Good day. For my final year research project, I'm using proportionate stratified random sampling, in which each stratum has a certain number of participants, based on its district. I've a total of 7 strata = 7 districts. Due to the recent Covid-19 outbreak, I'm unable to travel and collect data physically. Hence, I'm heavily relying on online survey. Despite sharing my survey links in general and also to certain community pages (to target certain districts), the numbers for all districts/strata are still not well-balanced overall. E.g., District A has 79 (target = 26), District B has 98 (target = 28), District 7 has 4 (target = 4).

Would appreciate if you could provide some feedback and advice on what's next. Thank you.