temporary reduction in interest not as much as expected,why?

For the 5 year product, I was expecting 3% (half of 6%) interest in May but I've received more like 4%.

Does anybody know what is going on here? Will they be clawing this back in the subsequent months or have I not understood the statement below.

Thanks.

*Following the Covid-19 outbreak and the current economic environment, RateSetter announced on 4 May a temporary reduction in interest for the remainder of the year. During this time, investors will receive only 50% of their interest with the other 50% going to the Provision Fund, for the protection of all investors. Also, since the outbreak, the time it is taking investors to release their investments is currently longer than normal. Further information is available here.