Endowment miss-sell offer

I have been awarded an offer because of miss-sell, no fortune but
ok-ish.

I had one original policy for my first house(they say I'm too late to claim on that one-started in 1991)

The offer was for the top up endowment for my next house.

Question 1.
Should I except the offer given or is this just hoping I except without perusing further? Should I take it to ombudsman?
Is the first offer safe whatever?

Question 2.

Should I take first case to ombudsman even though I had letter warnings but didn't realise that there was a timescale?

Thanks.