Hi
 
When I log into my blockchain.info wallet I can see a balance of BTC. I was successfully able to claim BCH in September so assume all the addresses are ok. However I recently logged into extract the private keys to claim BTG I got the following message, "Imported Bitcoin Addresses Not backed up by your Recovery Phrase. Transfer into a wallet to secure funds." Upon reading this message I attempted the transfer the funds as instructed, where I received a second message advising "You have no addresses with a spendable balance greater than or equal to the required dust threshold."
 
This obviously concerned me but I continued on to the addresses section of the wallet to extract my private keys to which I can't find any. So my wallet is showing the balance I thought I had when I logged in but the wallet is telling me the addresses do not hold any funds and I can't extract the private keys. I am confused as to what has happened here, if anyone can assist it would be much appreciated.

I have been using the wallet intermittently over the past 12 months with no prior issues
 
Thank you