I have used this app for a long time and purchased the no ads and multiple locations options. Now RC Solutions thought it is better to pay a monthly fee for the "premium" version which does the same as my previous paid add-ons. There is even "High Speed Delivery".
The only problem is that now the notification come slow or later than before. If you say it is a "Premium" subscription service then make sure your "Premium" services are working correctly.
Definitely a step backward.
OkiiKuma about PREP(プレップ) - 総合防災アプリ, v3.3.4