Assupol policy

I have got a policy with assupol, policy no ***.ive open the policy 06 September 2017. On the 7th of March 2022 they send me a letter states my policy lapsed on the 28 February 2022 due to unpaid premiums. I am paying this policy monthly. And I have got prove of payment. The next thing they send me the letter again on the 21st of September 2022 states that on the 1st of November 2022 policy benefit (the amount for which you are covered) will decrease by 30%. Should you wish to reject the decreased benefit and maintain your current cover amount, your monthly premium will increase by 30%. Now I am confuse my policy lapsed all of a sudden they talk about decrease and increase. Now it's 5 years having a policy with assupol instead of talking about Cashback they talk about this. Please help me a concern applicant.