Immigrationboards.com

Been here living in the UK for 16 years with ILR since 2007, then I decided to apply for BC last April 2017 through by post as I believed that I meet all the requirements including ESOL from Trinity College with Entry 3 B1.1 of the CEFR taken from last August 2014 in Leicester. Whilst I am waiting the decision from HO, I received a message from my relative from the Philippines last July that I need to go back to the Philippines to attend a legal representation to my house property. I ask the HO to return my travel document so I can do an emergency travel, which they did. Whilst I was in the Philippines I recieved a letter from HO last August 10 requesting a valid proof of English requirement to be sumitted within 15 days. I replied the HO that I am in the Philippines and the only I can provide is the ESOL that I submitted with them during my application. I retured in the UK last August 26. Then on September 5, I recieved a letter from HO that my application was refused with the reason your not taken a test in an approved test centre...
My question is is my ESOl is not valid? Which is one is better? apply for reconsideration or reapply the whole process? thank you for any answers.

You can no longer use ESOL qualifications as proof for citizenship applications. From November 2015, an English language qualifications from the Home Office approved list of acceptable qualifications will be accepted

Review the English Requirement here:
https://www.gov.uk/english-language
If you do not supply the correct documentation the Home Office is likely to refuse applications.